This may be of interest in the context of general discussion of Service Oriented Architectures:

In February 2005 OASIS formed the SOA-RM TC (Service Oriented Architecture Reference Model Technical Committee) and assigned it the responsibility of developing an SOA Reference Model. The reference model will not be tied to any particular implementation or set of standards but will define a shared vocabulary and identify the common elements of a service oriented architecture (i.e Service, Service Description, Service Advertising, Data Model, Contract etc). [Jim Alateras, O'Reilly Developer Weblogs. SOA Reference Model]