A service providing direct access to entries in map versions. Services that allow the filtering and query of entries in a MapVersion. These services allow the filtering of entries by rule and target content. A service that allows the evolution of a map entry to be retrieved and viewed. A set of parameters that are used to create or update a map target the name or URI of a correlation factor an external identifier assigned to this target entry by an outside body the map rule for the target. If omitted, the rule always evaluates to TRUE the entity name or URI to map to the description of the rule and/or target an expression that, when evaluated, produces a complex target The set of parameters that can be updated in a map entry. the rule for processing the member sets a source and the role they played in creating the entry A service that allows the creation, update and deletion of MapEntries within a MapVersion A list of map target lists, one per input entity PSM A list of map target lists, one per input entity An ordered list of map targets PSM An ordered list of map targets A service that interprets and resolves maps