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Introduction to Java Persistence API(JPA)

April 13, 2007 by Krishna Srinivasan Leave a Comment

Introduction Java Persistence API (JPA) provides POJO (Plain Old Java Object) standard and object relational mapping (OR mapping) for data persistence among applications. Persistence, which deals with storing and retrieving of application data, can now be programmed with Java Persistence API starting from EJB 3.0 as a result of JSR 220. This API has borrowed […]

Filed Under: Java EE Tagged With: EJB, JPA

EJB 3.0 Timer Services

March 28, 2007 by Krishna Srinivasan Leave a Comment

Starting from EJB 2.1, Timer Services are available for building J2EE Applications that depends on time based services. Time based services are mostly used in scheduling applications. Technically, these scheduling applications are called workflows. also read: Java EE Tutorials EJB Interview Questions EJB 3 Web Services Annotation and Dependency Injection in EJB 3 Query API […]

Filed Under: Java EE Tagged With: EJB, EJB 3

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