JDO Open source solution that gives you easy access to persistent data in databases
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access manipulate database access database Java development database manipulation

JDO Description

Open source solution that gives you easy access to persistent data in databases Java Data Objects (JDO) is a standard way to access persistent data in databases, using plain old Java objects (POJO) to represent persistent data. The approach separates data manipulation (done by accessing Java data members in the Java domain objects) from database manipulation (done by calling the JDO interface methods). This separation of concerns leads to a high degree of independence for the Java view of data from the database view of the database data.Interfaces are defined for the user's view of persistence:· PersistenceManager: the component responsible for the life cycle of persistent instances, Query factory, and Transaction access· Query: the component responsible for querying the datastore and returning persistent instances or values· Transaction: the component responsible for initiating and completing transactionsJDO is being developed as a Java Specification Request in the Java Community Process.NOTE: JDO is licensed and distributed under the terms of the Apache License v2.0. Here are some key features of "JDO": · Standards-Driven · Choice of datastores · Support POJOs · Usable in J2SE · Usable in J2EE · Out of box implementation · Simple to unit test · Dynamic queries · Comprehensive ORM · Primary Key generation · Supports inherited objects · Schema Creation · Existing schema

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