action or a set of actions that consume time and resources and whose performance is necessary to achieve, or contribute to, the realization of one or more outcomes

activity that has started but not necessarily finished

assignment of an activity to something

activity relationship between an activity and an activity happening

specific way to carry out an activity

assignment of a method to something

association of an method with a scheme or task that puts it inot practice

relationship between two activity method realizations

relationship between two methods

relationship between two activities

information that locates persons or organizations

assignment of an address to something

An AddressBasedLocationRepresentation is a specialization of LocationRepresentation specified by its postal identification

link between a task element and an advisory task step

An AdvisoryTaskStep is a type of TaskStep. It conveys information

An AlternatePartRelationship is a specialization of AlternateProductRelationship where the alternate and base products are parts

An AlternateProductRelationship is an association between two instances of Product. It specifies that any version of the AlternateProductRelationship, may be used in place of any version of the baseProduct. The relationship established by the AlternateProductRelationship is not symmetric: if B is an alternate product for A, A is not implied to be an alternate product for B

An Analysis is a specialization of Product. It is produced via a reproducible process

assignment of an analysis to something

An AnalysisDisciplineDefinition is a specialization of ProductViewDefinition. It is a definition or view of an AnalysisVersion taken from the perspective of the analysing organization. The AnalysisDisciplineDefinition is controlled by the analysing organization. The entity may be used to capture the definition of a particular version of an analysis at any intermediate stage of its development where the definition is not formally released by an organization at the analysis version level. It may be used to capture the various stages in the definition cycle of a product

analysis model that supports the description of analysis concepts

representation of the results of an analysis

An AnalysisRepresentationContext defines the context for the items (AnalysisModelItemsSelect) used in an AnalysisModel

An AnalysisVersion is a specialization of ProductVersion that identifies a particular version of an analysis

A AnalysisVersionRelationship is a specialization of ProductVersionRelationship that is used to assert an association between two versions of an analysis

A AnalysisVersionSequence is a specialization of AnalysisVersionRelationship that is used to assert that the one analysis version (the successor) replaces another (its predecessor)

An AndStateCauseEffectDefinition is a specialization of StateCauseEffectDefinition. It relates one or more causing StateDefinition entities and one effect StateDefinition. All the causing StateDefinition entities must exist prior to the single effect

application or discipline

formal record of the fact that the item to which the approval is assigned fulfills agreed criteria

assignment of an approval to something

relationship between two instances of Approval

An ApprovingPersonOrganization is an association between an Approval and the organization or person and organization that has granted this approval

relationship that indicates that an AssemblyViewRelationship may be substituted by another AssemblyViewRelationship. Both assembly relationships shall refer to the same ProductViewDefinition of the same assembly. An AssemblyRelationshipSubstitution defines a one-way substitution: if A is specified as a substitute for B, B is not implied to be a substitute for A

view definition relationship between two product views

allocation of an object to a target object

relationship between two assignments

link between two objects

An Assumption is the identification of something assumed to be true without proof. The reason or justification for an assumption being made shall be represented by a JustificationAssignment being assigned to the Assumption. The item that is assumed shall be related to the Assumption by an ItemAssumed

assignment of an Assumption to something

relationship between two Assumptions

place on a product nominated for the attachment of part specifications

An AttachmentSlotAsPlanned is a specialization of AttachmentSlotVersion that identifies an individual that is the subject of a plan to realize an AttachmentSlot

An AttachmentSlotAsRealized is a specialization of AttachmentSlotVersion that identifies an individual that is a realized AttachmentSlot

An AttachmentSlotDefinition is a specialization of ProductViewDefinition that identifies a view of an AttachmentSlot

An AttachmentSlotDesign is a specialization of AttachmentSlotVersion that identifies the design version of an attachment slot

An AttachmentSlotDesignToPlanned is a relationship between a design version of an AttachmentSlot and a planned individual that conforms to the design

An AttachmentSlotDesignToRealized is a relationship between a design version of an AttachmentSlot and a realized individual that conforms to the design

An AttachmentSlotOnProduct is a relationship between a product and an AttachmentSlot that is a location on the product at which to install removable parts

An AttachmentSlotPlannedToRealized is a relationship between a realized individual of an AttachmentSlot and a corresponding planned individual

An AttachmentSlotVersion is a specialization of ProductVersion that identifies a version of AttachmentSlot

An AxisPlacement is a specialization of DetailedGeometricModelElement that defines a right-handed, 2D or 3D, coordinate system. If the AxisPlacement belongs to a 3D geometric space, the third direction of the coordinate system is defined by the vector product of x-axis and y-axis. An AxisPlacement may be an AxisPlacement2d or an AxisPlacement3d

An AxisPlacement2d is a specialization of AxisPlacement

An AxisPlacement3d is a specialization of AxisPlacement

set of breakdown elements chosen in order to partition a product in a desired way, together with the hierarchical relationships between these breakdown elements

link between a breakdown and a constituent breakdown element

partition representing a physical, functional, system, or zonal aspect of a product

product view of a breakdown element version

product definition element relationship between a breakdown element definition or a breakdown element usage and an item that realizes that element definition or usage

view definition relationshipbetween a two breakdown elements

version of a breakdown element

link between a breakdown and a product which it provides a view of

version of a breakdown

A CartesianPoint is a specialization of DetailedGeometricModelElement that defines a point by a list of up to 3 cartesian coordinates

A CartesianTransformation2d is a specialization of DetailedGeometricModelElement. It is defined in a 2D geometric space by a 2*2 matrix and a cartesian point. Let be: M, the 2*2 multiplication matrix of the cartesian transformation; A, the point of the cartesian transformation; P, a point in the geometric space; Q, the result of the application of the transformation to P. The coordinates of Q shall be obtained by the formula: Q = M*P + A

A CartesianTransformation3d is a specialization of DetailedGeometricModelElement that is a geometric transformation defined in a 3D geometric space by a 3*3 matrix and a cartesian point. Let be: M, the 3*3 multiplication matrix of the cartesian transformation; A, the point of the cartesian transformation; P, a point in the geometric space; Q, the result of the application of the transformation to P. The coordinates of Q shall be obtained by the formula: Q = M*P + A

A CausalConsequence is a specialization of ViewDefinitionRelationship that identifies secondary effects related to or resulting from a particular RiskConsequence

record created as a result of a successful certification providing proof of complying to or passing certain criteria

assignment of a certificate to something

relationship between two instances of Classification

product that specifies a set of data

assignment of a collection view definition to something

associationof a collection view definition with a member of the collection

An CollectionRelationship is a specialization of ProductRelationship that represents an association between two Collection instances

version of a collection

An CollectionVersionRelationship is a specialization of ProductVersionRelationship that represents an association between two CollectionVersion instances

An CollectionVersionSequenceRelationship is a specialization of CollectionVersionRelationship that represents a sequential association between two CollectionVersion instances

product view of a collection version

A ComponentUpperLevelIdentification is a specialization of AssemblyViewRelationship. It identifies a component of an assembly with respect to an upper level in the assembly structure. The identified component is the version of product, indirectly referred to as the ProductOccurrenceDefinitionRelationship of the subAssemblyRelationship. The upper level assembly is the version of product, indirectly referred to as the ProductOccurrenceDefinitionRelationship of the upperAssemblyRelationship

A CompositionOfState is a specialization of state relationship and it relates the nature of states in relation to one another, where two or more State parts compose a whole State; and furthermore, whole states can become parts of yet another whole State

A CompositionOfStateDefinition is a specialization of StateDefinitionRelationship. It relates StateDefinition entities to one another, when two or more StateDefinition entities act as parts to compose a whole StateDefinition; and furthermore, whole StateDefinition entities can become parts of yet another whole StateDefinition

A ConcurrentElements is a specialization of StructuredTaskElement that comprises a set of actions to be performed during the time required for the longest task. No specific order is required

state of affairs that must be exist before a statement or relationship becomes valid

assignment of a condition to something

A ConditionEvaluation is a record of the evaluation of a Condition and the subsequent result

assignment of a Condition evaluation to something

A ConditionEvaluationParameter is an identification of the product or activity data used in the evaluation of the Condition identified by the ConditionEvaluation

link between conditionand the product or activity data that specifies it

relationship between two conditions

A ConditionalEffectivity is a specialization of Effectivity for which the domain of applicability is defined by an explicit condition

A ContextualItemShape is a specialization of ItemShape that identifies the shape of a product version in the context of its use in another product version. The product version whose contextual shape is identified, is the product version associated with the ViewDefinitionRelationship of the ViewDefinitionUsage

written or spoken agreement intended to be enforceable by law

assignment of a contract to something

relationship between two Contract instances

assignment of a date and time to something

effectivity for which the domain of applicability is defined as an interval of time bounded by dates or events

A DecisionPoint is a type of StructuredTaskElement. It requires a decision that determines which further TaskElement is to be followed

A DecreasingResourceEvent is a specialization of ResourceEvent that decreases the balance of a managed resource

relationship that links a StateAssertion to a StateAssessment

an element or term that serves to describe, identify, or index something.

relationship between two descriptors

A DetailedGeometricModelElement is a specialization of RepresentationItem. It identifies a geometric construct. Only non abstract specializations of the DetailedGeometricModelElement entity data type can be instantiated

document definition of a collection of files that are archived on optical, magnetic, or electronic media, or a combination thereof

file that contains computer interpretable data and is stored on an electronic device or on optical, magnetic, or electronic media, or a combination thereof

activity that is governed by a work order

A Direction is a specialization of DetailedGeometricModelElement that defines a 2 or 3 dimensional vector

A DistributionByValue is a specialization of ProbabilityDistribution that explicitly lists pairs of random variable values and function values

product used to specify data that is under configuration change management

assignment of a document to something

product view of a document version in a particular format

relationship between two instances of DocumentDefinition

version of a document

specification of a domain of applicability

assignment of an effectivity to something

relationship between two instances of Effectivity. The meaning of the relationship is represented with the relationType attribute

An ElementConstraint is a specialization of TaskElementRelationship that signifies a constraint between TaskElements. The constraint may only apply within the context of a TaskMethod or TaskElement, specified as the context

An EndTask is a type of TaskElement. It signifies a point at which to end the task

historical record of the transmission of a message

relationship between two envelopes

assignment of an Environment definition view to something

An EnvironmentDefinition is a specialization of Product that is used to identify the definition of typical environment in which a product is to be, has been or is planned to be deployed in, operated in, or supported in

A EnvironmentDefinitionVersion is a specialization of ProductVersion that identifies a particular version of an EnvironmentDefinition

A EnvironmentDefinitionView is a specialization of ProductViewDefinition that provides a view of a version of an environment definition relevant for one or more application domains. This view collects the characteristics that define an environment

A EnvironmentViewDefinitionRelationship is a specialization of ViewDefinitionRelationship that represents an association between two EnvironmentDefinitionView instances

collection of items used together to provide a single piece of evidence within a Validation or ]verification http://docs.oasis-open.org/plcs/ns/plcslib/v1.0/data/plcs/plcs-psm/refdata/plcs-psm#Verification]

An ExitLoop is a type of StructuredTaskElement. It signifies a point at which to exit from a loop

An ExpandedUncertainty is a specialization of StandardUncertainty that specifies the factor of an uncertainty

An ExperienceGained is a relationship between an ExperienceInstance and a person or organization

An ExperienceInstance is a particular episode of contact with and/or observation of facts or events which contributes to the accumulation of knowledge or skill. The nature, duration and worth of the ExperienceInstance can be described using assigned properties or by referring to activities or tasks

category of experience

relationship used to relate a compound experience to its component experiences

analysis model whose content is provided in an external file

identification of the definition of a property

reference to the specification of the type of datum that is defined externally to an exchange file

measurable quantity, dimension, or magnitude adopted as a basis or standard of measurement for other quantities of the same kind and in terms of which their magnitude is calculated or expressed

a collection of data or programs stored under a single identifying name using digital or other media

relationship between two instances of File

breakdown comprising functional elements

breakdown context that links a functional element to a functional breakdown of which includes the functional element as a member

version of a functional breakdown

breakdown element that represents a function

breakdown element definition of a functional element version

breakdown element usage that links a functional element to a constituent functional element

version of a functional element

A GeometricOperatorTransformation is a specialization of GeometricPlacementOperation

A GeometricPlacement is a specialization of GeometricPlacementOperation

A GeometricPlacementOperation is a specialization of DetailedGeometricModelElement. A GeometricPlacementOperation may be a GeometricPlacement or a GeometricOperatorTransformation

A GlobalLocationRepresentation is a type of LocationRepresentation specified using geographic means in the global system and values, which could be physical or political geographic values

file that is stored on non-digital media

A HierarchicalInterfaceConnection is a specialization of InterfaceConnection that provides an interconnection between components at different levels in an assembly. Each connection point in the assembly is represented by a InterfaceConnectorOccurrence

name or code that is used to label something and to refer to that thing

relationship between a pair of Identifications

An InZone is a relationship between a ZoneElement and an item that exists within the zone

A IncreasingResourceEvent is a type of ResourceEvent that increases the balance of a managed resource

An InformationRight is a definition of what may or may not be done with information in the sense of legal rights and obligations

An InformationUsageRight is an application an InformationRight to a particular usage context

assignment of an Information usage right to something

relationship of one InformationUsageRight to another

A InterfaceConnection is an interconnection between a connected pair of InterfaceConnectorOccurrences. Each InterfaceConnectorOccurrence represents the place where a product used in an assembly can interact with other products in the assembly

An InterfaceConnector is a specialization of Product that identifies a part of a product with which one or more other products or the environment interacts

An InterfaceConnectorAsPlanned is a specialization of InterfaceConnectorVersion that identifies an individual that is the subject of a plan to realize an InterfaceConnector

An InterfaceConnectorAsRealized is a specialization of InterfaceConnectorVersion that identifies an individual that is a realized InterfaceConnector

An InterfaceConnectorDefinition is a specialization of ProductViewDefinition that identifies a view of an InterfaceConnector

An InterfaceConnectorDesign is a specialization of InterfaceConnectorVersion that identifies a design version of an InterfaceConnector

An InterfaceConnectorDesignToPlanned is a relationship between a design version of an InterfaceConnector and a planned individual that is to conform to the design

An InterfaceConnectorDesignToRealized is a relationship between a design version of an InterfaceConnector and a realized individual that conforms to the design

A InterfaceConnectorOccurrence is an occurrence of a InterfaceConnectorDefinition. The InterfaceConnectorOccurrence represents the place where a product used in an assembly can interact with other products in the assembly. The interaction is represented by a InterfaceConnection

An InterfaceConnectorPlannedToRealized is a relationship between a realized individual of an InterfaceConnector and a corresponding planned individual

An InterfaceConnectorVersion is a specialization of ProductVersion that identifies a version of an InterfaceConnector

A InterfaceDefinitionConnection is an interconnection between a connected pair of InterfaceConnectorDefinitions or, if the point of interconnection is not specified, the interconnection between a pair of views ( ProductViewDefinitions) on products

An InterfaceDefinitionFor is a relationship between an InterfaceSpecification and an item that conforms to the specification

An InterfaceSpecification is a specialization of Product that provides a definition of necessary attributes for one or more items that participate in an interface

An InterfaceSpecificationDefinition is a specialization of ProductViewDefinition that provides a view of an InterfaceSpecification

An InterfaceSpecificationVersion is a specialization of ProductVersion that identifies a version of an InterfaceSpecification

An ItemAssumed is an association between an Assumption and the item that is being assumed

An ItemDesignAssociation is the association of a ProductConfiguration with a ProductViewDefinition or a ProductVersion. It specifies the design that corresponds to the ProductConfiguration. If the design is a ProductViewDefinition, the ItemDesignAssociation represents the statement that, in the considered definition context, the product version, that is, the ProductViewDefinition is a valid way to implement the ProductConfiguration. If the design is a ProductVersion, the ItemDesignAssociation represents the statement that, in all definition contexts, the ProductVersion is a valid way to implement the ProductConfiguration

An ItemShape is the shape of a

AnItemShapeObject is an abstract generalization of instances that represents the shape of a ShapeableItemSelect

An ItemUsageEffectivity is an effectivity domain that constrains the use of a product with or within another product, in the context of a ProductConfiguration. The effectivityDomain attribute identifies a domain of effectivity. The itemUsageRelationship attribute identifies a relationship which characterizes the use of the product with or within another product. The resolvedConfiguration attribute identifies an association between a ProductConfiguration and a product that implements it. This attribute establishes the context in which the itemUsageRelationship is considered and constrained. When the effectivity domain is a range of serial numbers, the serial numbers considered are those of the ProductConfiguration. When the effectivity domain is defined using a production lot number, the production lot considered is one of the ProductConfiguration. When the effectivity domain is an interval of time, the interval of time considered is related to the production of the ProductConfiguration

the identification and description of the reasons for something

assignment of a justification to something

relationship between two Justifications

assignment of something to a justification

a language in which human readable text is written

period in a lifecycle

place or position where an activity or event can occur or something can exist

assignment of a location to something

relationship between two locations

A LocationRepresentation is a means of representing a location

A LoopingElement is a specialization of TaskElement. It invokes a specified number of repetitions of a further TaskElement

effectivity for which the domain of applicability is defined as a given batch of items

A MakeFromRelationship is a specialization of ViewDefinitionUsage established between two instances of PartViewDefinition. It specifies that, in the context of the definition of the relating part version, the relating part version is considered as resulting from the manufacturing transformation of the related part version

A ManagedResource is a representation of a resource that is provided with resource management capabilities. The role of a managed resource is determined by classification

relationship between two managed resources. The meaning of the relationship is determined by classification

A Market is the identification of a marketing segment for products

A MeasureQualification is a means to provide information about measurements in which there is an associated uncertainty. The uncertainty may be specified as precision, qualitative uncertainty, or expanded uncertainty, and the type of the related datum shall be included. The uncertainty is defined in clause 2 of "The Guide to the Expression of Uncertainty in Measurement"

collection of information, brought together by an originator (the message definer) for some particular purpose, generally the fulfillment of a process

relationship between two related messages. The meaning of the association depends on MessageRelationship.role

assembly component relationship between two product views where one is the parent assembly and the other is a component of that assembly

circumstances in which a numerical value is recorded and in which that numerical value can be fully understood

value with unit where the value part is expressed numerically

historical record of something that has occurred during the life of a product or its support environment

assignment of an observation to something

An ObservationConsequence is an association of an observation to the consequences that follow from it, where those consequences are in the form of a WorkRequest

relationship between two observations. The nature of this relationship is identified by the role. Where there is a structural relationship between Observation, the semantics of the structure are identified by the classification of the ObservationRelationship against reference-data

An ObservedEnvironment is a specialization of Product that represents a record of observations about the environment in which a product is or has been operating

assignment of an Observed environment view to something

An ObservedEnvironmentToDefinition is a relationship between a record of a set of observations about an environment, represented by an ObservedEnvironment, and a typical environment, represented by an EnvironmentDefinition. The typical environment is the expected environment about which observations have been made

An ObservedEnvironmentToDefinitionVersion is a relationship between a version of the record of a set of observations about an environment, represented by an ObservedEnvironmentVersion, and a version of the typical environment, represented by EnvironmentDefinitionVersion. The typical environment is the expected environment about which observations have been made

An ObservedEnvironmentToDefinitionView is a relationship between a view of the record of a set of observations about an environment, represented by an ObservedEnvironmentView, and a view of the typical environment, represented by EnvironmentDefinitionView. The typical environment is the expected environment about which observations have been made

An ObservedEnvironmentVersion is a specialization of ProductVersion that identifies a particular version of an ObservedEnvironment

An ObservedEnvironmentView is a specialization of ProductViewDefinition that provides a view of a version of an observed environment relevant for one or more application domains. This view collects the characteristics of the observations on the environment

An ObservedEnvironmentViewDefinitionRelationship is a specialization of ViewDefinitionRelationship that represents an association between two ObservedEnvironmentView instances

An OrStateCauseEffectDefinition is a specialization of StateCauseEffectDefinition. It relates one or more StateDefinition entities that are causes to a StateDefinition that is the effect. At least one cause must exist prior to the effect

structured body of persons with a particular purpose

An OrganizationBasedLocationRepresentation is a specialization of LocationRepresentation that specifies a location in the context of an organization

assignment of an organization or a person in organization to something

relationship between an Organization organization and an OrganizationType

relationship between two instances of Organization

An OrganizationType is a recognized kind of Organization

An OrganizationalLocationIdentification is location that is defined by an identification which is specific in an organization context

A ParameterizedDistribution is a specialization of ProbabilityDistribution that is used to link a named probability distribution to the parameters that define it

specification for either a physical product or for a non-countable material

version of a part specification

product view of a part specification version

document assignment that identifies a specific portion of the contents of a document and assigns that portion to something

individual human being

role of person in an organization

A PersonOrOrganizationOrPersonInOrganizationInPosition is a Person, Organization, or PersonInOrganization that holds a Position. A person may hold more than one position within an organization or organizations. A position in an organization can be held by more than one person or organization

relationship between one Organization, Person, or PersonInOrganization and another. Examples of the relationship are

breakdown comprising physical elements

breakdown context that links a physical element and a physical breakdown of which it is a member

version of a physical breakdown

document definition of a hardcopy document

breakdown element that represents something physical

breakdown element definition of a Physical element version

breakdown element usage that links two physical elements

A PhysicalElementVersion is a specialization of BreakdownElementVersion that identifies a version of a PhysicalElement

uppermost class in the hierarchy of PLCS classes

A Position is a function or job performed by a person. It defines responsibilities and activities. A position that is not fulfilled by a person is a vacancy

assignment of a Position to something

A PositionGroup is a group for collecting people in their positions to cooperate in an assignment

assignment of a Position group to something

relationship that specifies the participation of a position in a group

assignment of a Position type to a Position

relationship between Positions. Examples of relationships between Positions are

A PositionType is a recognized kind of position

assignment of a Position type to something

A PrecisionQualifier is a specification of the number of significant digits in the representation of a value. PrecisionQualifier shall be interpreted in accordance with PrecisionQualifier in part 45 of this standard

property value that that represents the likelihood of something

A ProbabilityByName is a specialization of Probability whose value belongs to a one of a set of named classes, rather than by assigning a specific numerical value, which may not be available

A ProbabilityDerivationParameter is a specialization of NumericalItemWithGlobalUnit that is used by a ProbabilityDerived in a particular role in order to calculate the particular probability

A ProbabilityDerived is a specialization of ProbabilityNumeric that associates a particular value of ProbabilityNumeric with the source from which the value derived together with any parameters used to get the particular value

A ProbabilityDistribution is a specialization of ProbabilityGenerator that is a probability distribution

A ProbabilityDistributionParameter is a specialization of NumericalItemWithGlobalUnit that is one of the set of values that characterizes a probability distribution

A ProbabilityFunctionValue is a specialization of NumericalItemWithGlobalUnit that is the value of the probability function at the given random variable value

A ProbabilityGenerator is a specialization of Representation. It is a source from the ProbabilityDerived is derived. The ProbabilityDerivationParameters are applied to the ProbabilityGenerator to get the particular derived value

A ProbabilityNamedValue is a specialization of RepresentationItem that is used to hold the name of the probability value

probability that is expressed as a numerical value

A ProbabilityNumericValue is a specialization of NumericalItemWithGlobalUnit providing a numeric representation of a probability

something tangible or intangible that is a result of a deliberate process

product that specifies an individual artefact that has been made or is planned to be made

effectivity for which the domain of applicability is defined as a set of instances of products as individuals

version of a product as individual

product view of a product as individual

A ProductAsPlanned is a specialization of ProductAsIndividualVersion that identifies a revision of an individual artefact that has yet to be made

version of a product as individual that has been made

A ProductBasedLocationIdentification is a specialization of LocationRepresentation that specifies a location in the context of a product

A ProductConcept is the identification of a set of similar products that were, are or will be proposed to customers

A ProductConfiguration is the identification of a ProductConcept as a configuration

A ProductConfigurationHierarchicalRelationship is a specialization of ProductConfigurationRelationship that is used to represent a hierarchical relationship between a parent ProductConfiguration and a child ProductConfiguration

relationship between a pair of ProductConfigurations

A ProductConfigurationRevisionSequence is a specialization of ProductConfigurationRelationship that is used to relate a previous version (predecessor) of a ProductConfiguration to the version that replaces it (successor)

relationship between a breakdown element usage or a breakdown element definition and a view definition usage or a resource item or a product view or a Product group or an Interface connector occurrence or an assembly component relationship

association between a product and a product as individual

association between a product version or Product configuration and a Product as planned or product as realized

A ProductDesignViewToIndividual is a relationship between a product design, represented by ProductViewDefinition. or ProductConfiguration, and a view of the product that is planned to be made or has been made ( ProductAsIndividualView) from the design

A ProductGroup is an identification of a set of ProductConcepts, Products, ProductGroups, ProductVersions or ProductAsIndividuals that have been grouped together

A ProductGroupMembership is an identification of an instance of an entity defined in the type that belongs to a ProductGroup

relationship between two ProductGroups. is used to specify the meaning or type of the relationship

A ProductInAttachmentSlot is a specialization of ViewDefinitionUsage that is a relationship between an AttachmentSlot and a ProductViewDefinition of a Product that is designed to be attached to the attachment slot

A ProductPlannedToRealized is a relationship that establishes that a revision of a planned artefact represented by ProductAsPlanned has been realized as a revision of an actual artefact ProductAsRealized

relationship between two Products

version of a product

relationship between two versions of Product

collector of information for a product version relevant from the perspective of a particular point of view defined by an application domain and a life-cycle phase

identified program of work

assignment of a project to something

relationship between two instances of Project with an identification and a description of their relationship

A PromissoryUsage is a specialization of AssemblyViewRelationship. It establishes a relationship between an assembly and a component, regardless of the number of intermediate levels between them, which may be established with instances of NextAssemblyUsage

assignment of a property to something

relationship between two properties

quantification or qualification of a property

assignment of a property value to something

relationship between two property values

relationship between a pair of Proxies

assignment of a qualification type to something

category of qualification

relationship between two QualificationTypes

A QualitativeUncertainty is a specialization of UncertaintyQualifier. The uncertainty is defined in clause 2 of "The Guide to the Expression of Uncertainty in Measurement"

A RandomVariable is a specialization of NumericalItemWithGlobalUnit that is the value of a random variable

A RegionalCoordinate is a location that is specified relative to a Regional location system

A RegionalGridLocationRepresentation is a specialization of LocationRepresentation that specifies a reference grid system

A RelatedConditionParameter is a relationship between a ConditionParameter and a ConditionEvaluationParameter. This relationship is used to record the relationship between the parameters used to define a condition and the parameters used to evaluate it

A RelatedConsequence is a specialization of ViewDefinitionRelationship describing the expected consequences of a specific perception of a risk

dependency between two objects

A RepeatCount is a type of LoopingElement. It invokes a specified number of repetitions of the LoopingElement TaskElement inherited from the LoopingElement parent generalization

A RepeatUntil is a type of LoopingElement. It invokes repetitions of a further TaskElement and is repeated until the specified condition is satisfied. The element being repeated shall be executed at least once and the condition tested after the first execution

A RepeatWhile is a type of LoopingElement. It invokes repetitions of a further TaskElement and is repeated while the specified condition is satisfied. The test condition shall be evaluated prior to invoking the method and may result in the LoopingElement not being executed at all

an identified need for a resource

assignment of a required resource to something

required resource that is satisfied by a resource item

relationship between two required resources

A RequiredResourceRequirement is an association of a required resource with one or more requirement version entities that fulfil the resource requirement

product that specifies a requirement

assignment of a (requirement view http://docs.oasis-open.org/plcs/ns/plcslib/v1.0/data/plcs/plcs-psm/refdata/plcs-psm#RequirementViewDefinition] to something

A RequirementCollectionRelationship is a specialization of ViewDefinitionRelationship that is used to relate a parent (collection) requirement to its member requirements. This provides a method for collecting together a set of requirements and treating them as a single requirement, whilst still being able to refer to individual requirements

A RequirementSatisfiedBy is a relationship between an item and a requirement, asserting that the item satisfies the identified requirement

A RequirementSource is a relationship between a requirement (via the RequirementViewDefinition entity) and the data types representing the source of the requirement

product version of a requirement

A RequirementVersionRelationship is a specialization of ProductVersionRelationship that is used to relate a previous version (predecessor) of a requirement to the version that replaces it (successor)

product view of a requirement version

A RequirementViewDefinitionRelationship is a specialization of ViewDefinitionRelationship. A RequirementViewDefinitionRelationship is the association between one RequirementViewDefinition and another

record of a resource that has been used or consumed

assignment of a resource as realized to something

relationship between the record of used or consumed resources and the corresponding statement of RequiredResource

A ResourceEvent is an event or action that affects the balance or availability of a managed resource. The role of a resource event is determined by classification

relationship between a resource event and a corresponding statement of RequiredResource. The meaning of the relationship is determined by classification

relationship between two Resource events

A ResourceGroupRelationship is a specialization of ResourceItemRelationship that specifies the means to associate two resource items that are part of a resource group. The meaning of the entity is determined by classification

stock or supply of materials, assets, or labour

assignment of a resource item to something

specification of how a resource item may be associated with an item that serves as the resource

relationship between two resource items

A Risk is a specialization of Product that is the potential for realization of unwanted negative consequences of an event

A RiskConsequence is a specialization of ProductViewDefinition and specifies the outcome of an event

assignment of an method to a Risk perception

assignment of a Risk consequence to something

A RiskPerception is a specialization of ProductViewDefinition that defines values or concerns with which a stakeholder views a particular Risk. The context in which a RiskPerception occurs is represented by RiskPerceptionContext

defines the context for the perception of the risk.

A RiskPerceptionRelationship is a specialization of ViewDefinitionRelationship that defines an association between two instances of RiskPerception

assignment of a Risk perception to something

A RiskRelationship is a specialization of ProductRelationship. It is an association between two an association between two instances of Risk

A RiskVersion is a specialization of ProductVersion. It defines a form of a risk that differ in certain respects from an earlier form of that risk or from other forms of that risk

A RiskViewDefinition is a specialization of a ProductViewDefinition  and is an abstract generalization of instances that represents …

A Scheme is a specialization of ActivityMethod. It provides the identification and description of an intended course of action to accomplish an objective. A Scheme enables the ordering of entries. Dates and times may be specified for entries and time intervals between entries

A SchemeEntry is a specialization of ActivityMethod that provides the identification and description of a single entry in a specific Scheme

assignment of a Scheme entry to something

A SchemeEntryRelationship is a specialization of ActivityMethodRelationship. It relates two SchemeEntry entities. An association may exists between SchemeEntry entities that relate to different Scheme or between different SchemeEntry entity instances for the same Scheme

A SchemeRelationship is a specialization of ActivityMethodRelationship relating two Schemes

assignment of a Scheme to something

A SchemeVersion is a specialization of ActivityMethod. It enables version control of Scheme

assignment of a Scheme version to something

A SchemeVersionRelationship is a specialization of ActivityMethodRelationship relating two SchemeVersions

level of confidentiality that can be applied to protect something against unauthorized usage

assignment of a security classification to something

assignment of a classification to something

A SequenceOfState is a specialization of StateRelationship in which one set of State precedes another set of State

A SequenceOfStateDefinition is a specialization of StateDefinitionRelationship. It defines a sequence of two or more state definitions

A SequencingRelationship is a specialization of SchemeEntryRelationship. It defines a specific type of sequencing and relative timing for two SchemeEntry

effectivity for which the domain of applicability is defined as a possibly open-ended interval of serial numbers

relationship between two instances of ShapeElement

A SimultaneousElements is a specialization of ConcurrentElements that represents two or more actions to be performed together

A StandardUncertainty is a specialization of UncertaintyQualifier. A StandardUncertainty may be an ExpandedUncertainty. The uncertainty is defined in clause 2 of "The Guide to the Expression of Uncertainty in Measurement"

A StartTask is a type of TaskElement. It signifies the start point of the task

mode of being in which something does, could, or did exist for a period of time

statement confirmed by evidence such as a measurement assertion that a state is in conformance with a particular state definition

subjective statement without supporting evidence that a state is in conformance comparable with a particular state definition

assignment of a state to something

A StateCauseEffect is a specialization of state relationship and it relates two or more states as one state causing particular resulting effect state(s). In turn, an effect state can become a new causing state yielding in yet more effect states

A StateCauseEffectDefinition is a specialization of StateDefinitionRelationship that is used to define a causal relationship between two sets of StateDefinition entities. At least one StateDefinition acts as a cause and at least one StateDefinition acts as a effect

A StateComplementDefinition is a specialization of StateDefinitionRelationship. It is a relationship among three sets of StateDefinition entities. It defines the complement of a set of StateDefinition entities relative to a set of StateDefinition entities that are the universe

definition of a possible or typical state

assignment of a state definition to something

relationship between two or more instances of StateDefinition

state that something has been observed to be in

state that something has been predicted to be in

A StatePredictedToObserved is a specialization of state relationship. It specifies the relationship between two individual states, one of which is a StatePredicted to a second state which is a StateObserved

A StateProperSubsetDefinition is a specialization of StateDefinitionRelationship. It is a relationship between two sets of StateDefinition entities

relationship between two or more State

A StateSubsetDefinition is a specialization of StateDefinitionRelationship. It is a relationship between two sets of StateDefinition entities

A StateSymptomDefinition is a specialization of StateDefinitionRelationship. It relates two or more StateDefinition entities in regards to symptom, where a symptom is something that indicates the existence of something else. At least one StateDefinition acts as a symptomCause and at least one StateDefinition acts as a symptomEffect

A StateTransition is a specialization of state relationship and it relates two or more states before and after a transition in State, where at least one State is a start state and at least one State is an end state

A StateTransitionDefinition is a specialization of StateDefinitionRelationship. It relates two or more StateDefinition entities before and after a transition in state, where at least one StateDefinition is a startState and at least one StateDefinition is an endState

property value expressed as a sequence of one or more alphanumeric characters

A StructuredTaskElement is a type of TaskElement. It is made up of other TaskElements

A SuppliedPartRelationship is a specialization of ProductVersionRelationship that relates two instances of ProductVersion that represent the same instance in different organizational contexts. One of the organizations is the supplier of the instance to the other organization. This entity is applicable for part versions and document versions

A System is a specialization of Product used to identify a conceptual solution to a collection of requirements

breakdown comprising system elements

A SystemBreakdownContext is a specialization of BreakdownContext that is a membership relationship between a SystemElement and a SystemBreakdown of which the system element is a member

A SystemBreakdownVersion is a specialization of BreakdownVersion that identifies a version of a SystemBreakdown

breakdown element that represents a System

A SystemElementDefinition is a specialization of BreakdownElementDefinition that identifies a view of a version ( SystemElementVersion) of a SystemElement

A SystemElementUsage is a specialization of BreakdownElementUsage that is a relationship between a SystemElementDefinition and another SystemElementDefinition that is a constituent

A SystemElementVersion is a specialization of BreakdownElementVersion that identifies a version of a SystemElement

A SystemVersion is a specialization of ProductVersion that represents a particular version of a system

A SystemVersionRelationship is a specialization of ProductVersionRelationship used to relate versions of a system

A SystemVersionSequence is a specialization of SystemVersionRelationship used to relate a previous version of a system to the version that replaces it

A SystemViewDefinition is a specialization of ProductViewDefinition that provides a view of a system version relevant for one or more application domains

method that represents the undertaking of a task

assignment of a task element to something

A TaskElementLevels is a type of TaskElement that provides two or more different descriptions in place of a single method. The actual work will be the same whichever alternative TaskElement is followed

A TaskElementRelationship is a specialization of ActivityMethodRelationship. It relates two instances of TaskElement

A TaskElementSequence is a specialization of TaskElement that comprises a sequence of steps to be followed in a specified order

relationship between a State or a StateDefinition and a TaskElement. The meaning of the entity is determined by classification. Candidate meanings include: assumed starting state; required starting state

task element that constitutes an instruction to perform another task method

method that relates an activity to a Task objective

assignment of a task method to something

A TaskMethodRelationship is a specialization of ActivityMethodRelationship. It relates two task methods

relationship between a state and a TaskMethod

version of a task method version

assignment of a task method version to something

A TaskMethodVersionRelationship is a specialization of ActivityMethodRelationship. It relates two instances of TaskMethodVersion

A TaskObjective is a result or objective that is reached by undertaking a TaskMethod

relationship between a state and a TaskObjective

A TaskStep is a specialization of TaskElement that is not further sub-divided

A TimeInterval is the identification of an intervening time

assignment of a Time interval to something

effectivity for which the domain of applicability is defined as a Time interval

relationship between two instances of TimeInterval. The meaning of this association is specified in the TimeIntervalRelationship attribute

A TimeIntervalWithBounds is a specialization of TimeInterval. A TimeIntervalWithBounds is bounded either on one side or both sides. If neither secondaryBound nor Duration are specified, the time interval begins at the point in time identified by primaryBound and has no specified end point

A TracingRelationship is a specialization of ViewDefinitionRelationship that shows tracing from ( TracingRelationship) one requirement to another ( TracingRelationship). A requirement may trace to many other requirements and vice versa - this is achieved by creating multiple instances of the tracing relationship entity

category of person

assignment of a Type of person to something

A TypeOfPersonDefinition is the definition of a TypeOfPerson in terms of required properties or attributes

relationship between two definitions of a type of person ( TypeOfPersonDefinition)

relationship between a TypeOfPersonDefinition and the attributes required to define that type of person

An UncertaintyQualifier is a generalization of a StandardUncertainty or a QualitativeUncertainty. The uncertainty is defined in clause 2 of "The Guide to the Expression of Uncertainty in Measurement"

A Validation is a subjective assertion that an item is "fit for purpose". Evidence used in this validation is identified by the inverse attribute validatedBy. Validation is commonly understood to mean "Have we built the right system?". Validation is concerned with ensuring that the system will meet the customer’s objectives and expectations. Validation usually includes testing under normal usage conditions

A ValueLimit is a specialization of NumericalItemWithUnit that specifies a qualified numerical value representing either the lower limit or the upper limit of a particular quantifiable characteristic

A ValueList is a specialization of MeasureItem that is an ordered collection of MeasureItems

A ValueRange is a specialization of MeasureItem that is a pair of numbers representing the range in which the value shall lie

A ValueSet is a specialization of MeasureItem that is an unordered collection of MeasureItems

A ValueWithTolerances is a specialization of MeasureItem that specifies a range of values by specifying a single nominal value and two tolerances that are offsets from the single value. The range is defined to be the closed interval [item value + lower limit, item value + upper limit]

property value specified as a value and unit

A Verification is an objective assertion of a claim that requirement is satisfied by a particular item represented in a RequirementSatisfiedBy has been verified. The evidence used in this verification is identified by the inverse attribute verifiedBy. Verification is commonly understood to mean "Have we built the system right?". Verification ensures that the specified requirements have been met. Verification uses the methods of Test, Analysis, Inspection, Demonstration, Similarity

relationship between two verifications

relationship between two product views

view definition relationship between two product views

authoritative instrument which provides directions to achieve the specified results

A WorkOutput is a statement of output resulting from an activity or a task. The role of the work output is determined by classification

assignment of a Work output to something

relationship between two work output statements. The meaning of the relationship is determined by classification.

solicitation for some work to be done

assignment of a work request to something

assignment of a method to a work request

relationship between two instances of WorkRequest

An XorStateCauseEffectDefinition is a specialization of StateCauseEffectDefinition. It relates one of the single or many causing state definition(s) and one effect StateDefinition, whereby any and only one of the causing state definitions exists prior to the single effect to take place

breakdown comprising zone elements

A ZoneBreakdownContext is a specialization of BreakdownContext that is a membership relationship between a ZoneElement and a ZoneBreakdown of which the zonal element is a member

zone breakdown version that identifies a version of a zonal breakdown

breakdown element that represents a 3 dimensional space

A ZoneElementDefinition is a specialization of BreakdownElementDefinition that identifies a view of a version ( ZoneElementVersion) of a ZoneElement

A ZoneElementUsage is a specialization of BreakdownElementUsage that is a relationship between a parent and child ZoneElement

A ZoneElementVersion is a specialization of BreakdownElementVersion that identifies a version of a ZoneElement