SUN has released a article describing EJB 2.1, the problems and what the solution would look like in EJB 3.0. Excellent hands on examples.
Via The ServerSide.
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The OO vs. ER fight
Donald Smith has a nice post about what could happens when there is no common understanding of the problem domain between the OO guys and the DBA (ER) guys here. Educating both the OO and the DBAs on the problems and concerns of the other part is extremely important. If not you’re stuck with one part spending way too much time trying to work around the issues they see no reason for having in the first place.
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Languages for the JVM
Wow. A quite extensive list of available languages that can run on the JVM. I think some of them are interpreted by Java code, while others are compiled streight into Java bytecode.