Property Definitions The name of a property definition is replaced by id and no longer restricted to SQL-92 syntax, but can be an arbitrary string. The type should be changed from propertyString to propertyId. The id has no restrictions on allowed characters or length. A repository SHOULD expose its native property name as it appears in its native user interface. Example: id="Business Object Id" groupId (formerly namespace prefix) type: URI The groupId identifies a logical group of properties. Ids within the same group (identified by the same groupId) are unique. The combination of groupId plus Id is globally unique. The groupId MUST be a URI. Example: groupId="http://example.com/myApp/" A globally unique identifier can be composed by concatenating the group identifier plus the property name in an ISO 9075 escaped form. All CMIS defined properties use a fixed group identifier like: http://docs.oasis-open.org/ns/cmis/core/200901/ The queryName is a flat unstructured string restricted to SQL 92 syntax. The queryName is unique within a type. Example: BUSINESS_OBJECT_ID Sample Property Definition: <n0:propertyIdDefinition xmlns:n0="http://docs.oasis-open.org/ns/cmis/core/200901"> <n0:id>Business Object Id</n0:id> <n0:groupid> http://example.com/myApp/&lt;/n0:groupid > <n0:queryname>BUSINESS_OBJECT_ID</n0:queryname> ... </n0:propertyIdDefinition> All methods containing properties (getObject(), updateProperties()) get an additional mandatory attribute group identifier <ns1:object> <ns1:properties> <ns1:propertyDateTime ns1:id="LastModificationDate" ns1:groupId="http://docs.oasis-open.org/ns/cmis/core/200901/"> <ns1:value>2009-04-17T13:50:58.671-07:00</ns1:value> </ns1:propertyDateTime> </ns1:properties> </ns1:object> Type Definition has id, group identifier, query name with the same rules as for property definitions.