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architecture not possible with IDMS?

architecture not possible with IDMS?

architecture not possible with IDMS?


Perhaps you are also using architectural programming principles. The general idea is a steering layer which is responsable for transaction handling, a business layer for business logic and a data layer for database access. A service layer takes care about requests from other subsystems. Other subsystems can send transactions which are handled by a kind of office: the message handler for that subsystem.

Now I work in the IDMS environment which I don't know that well. At the customers office, they start transactions in the data-layer. That is a big problem, because the true transaction is on a higher level. I wonder how other people are handling this. In IMS/DC DB2 environments, I never had this problem. DB2 takes care about begin- and end transactions. But... in IDMS you have to open a database by yourself. The business layer should not have any knowledge of the data layer, should only know about an interface.

Perhaps someone knows a smart way to open the databases at the moment that it is needed and a way to close them at the end of a transaction without putting the wrong dependencies between layers.

Thanks in advance for your answer!



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