Web Services Dynamic Discovery (WS-Discovery)

30 January 2009

Introduction

This document describes version 1.1 of the WS-Discovery namespace. It also contains a directory of links to related resources using the Resource Directory Description Language (RDDL) 2.0.

Namespace URI Versioning Policy

It is the intent of the OASIS WS-DD Technical Committee that the WS-Discovery namespace URI will not change arbitrarily with each subsequent revision of the corresponding WSDL or XML Schema documents but rather change only when a subsequent revision, published in conjunction with a Committee Draft, results in non-backwardly compatible changes from a previously published Committee Draft.

Under this policy, the following are examples of backwards compatible changes that would not result in assignment of a new namespace URI:

• addition of new global element, attribute, complexType and simpleType definitions
• addition of new operations within a WSDL portType or binding (along with the corresponding schema, message and part definitions)
• addition of new elements or attributes in locations covered by a previously specified wildcard
• modifications to the pattern facet of a type definition for which the value-space of the previous definition remains valid or for which the value-space of the preponderance of instance would remain valid
• modifications to the cardinality of elements for which the value-space of possible instance documents conformant to the previous revision of the schema would still be valid with regards to the revised cardinality rule

Related Resources for WS-Discovery

Normative Reference:

XML Schema:

WSDL:

Related Namespaces (include RDDL metadata)

http://schemas.xmlsoap.org/ws/2005/04/discovery/