One of the hotter topics on the minds of developers of late has been the rise in discussion about a new framework, Ruby on Rails. Rails is a MVC web framework, conceptually similar to Struts or ...

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You’ll also get started with JPA Query Language (JPQL) and use it to execute a few simple database operations on the example application. The complete source code for the example application can be ...

Persistence is a fundamental piece of an application. Obviously, without persistence all work would be lost. However, persistence means different things to different people. The length of time ...

Suppose I have a table which defines labels in terms of a unique code, together with a language. create table Label ( code bigint not null, language char(2) not null ...