How does Websphere handle container managed persistence? Does it use JDBC to interface with the database or does it go directly to the db via the same interfaces used by the HLLs?


I'm very curious about this because I have a sticking point about SQL related technologies for data-entry oriented apps. (for reporting ok, for other than that... but let's skip that discussion for now!)

If it does use JDBC then I'd be inclined to use BMP and get at the DB with either the javatoolbox or integrate with a service program or some such. I have to tell you that currently I have no real experience with WebSphere, just "book knowledge", so any and all info, suggestions and insight is most welcome. "Native" access to the db is a unique difference from other platforms that, for performance reasons, I think would be worth exploiting.

Oh - and before I forget to mention it, there's interesing reading at
http://publib.boulder.ibm.com/infocenter/wbihelp/index.jsp?topic=/com.ibm.wasee.doc
click on "Container Managed Persistence over Anything" in the "Server Foundation" chapter. Makes me think that perhaps you could use CMP but have the performance of directly accessing the database.



Tom D.



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