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Berkeley DB Java Edition is a open source, transactional storage solution for Java applications. The Direct Persistence Layer (DPL) API is faster and easier to develop, deploy, and manage than serialized object files or ORM-based Java persistence solutions. The Collections API enhances the standard java.util.collections classes allowing them to be persisted to a local file system and accessed concurrently while protected by ACID transactions. Data is stored by serializing objects and managing class and instance data separately so as not to waste space. Berkeley DB Java Edition is the reliable drop-in solution for complex, fast, and scalable storage. Source for this release is in 'je-4.0.92-sources.jar', the Javadoc is located at 'http://download.oracle.com/berkeley-db/docs/je/4.0.92/'.

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Support for the Java Connector Architecture, which provides a standard
for connecting the J2EE platform to legacy enterprise information
systems (EIS), such as ERP systems, database systems, and legacy
applications not written in Java.

Package Specification


Users who want to run JE within a J2EE Application Server can use the
JCA Resource Adapter to connect to JE through a standard API. The JE
Resource Adapter supports all three J2EE application server
transaction types:



No transaction.
Local transactions.
XA transactions.




JCA also includes the Java Transaction API (JTA), which means that JE
supports 2 phase commit (XA).  Therefore, JE can participate
in distributed transactions managed by either a J2EE server or
the applications direct use of the JTA API.