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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration/JPA/persistence.xml"

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Revision as of 07:29, 15 June 2010


A persistence unit configures various details that are required when you acquire an entity manager. You specify a persistence unit by name when you acquire an entity manager factory.

You configure persistence units in the JPA persistence descriptor file: persistence.xml.

In this file, you can specify the vendor extensions that this reference describes by using a <properties> element.

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