The X/Open Unix portability group finally took the wraps off its model for transaction processing at the Comunix conference last month, but the promised White Paper giving more detail and inviting feedback is not due for another month. The model defines functional layers, and semantics for a model capable of handling updates to multiple databases on one or more machines, and includes the concept of Transaction Manager responsible for co-ordinating the various local parts of a transaction into a coherent entity. The Group commissioned Data Logic to conceive the model, which stops short of defining specific interfaces to the various layers.
