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Space4J is a simple database system that will let you work with Java Collections in memory. Since memory is several orders of magnitude faster than disk for random access to data, Space4J provides better scalability for "real-time" web applications and systems that require performance.

This document takes you through the basics of how to add Javaâ„¢ Persistence functionality to a J2EE 1.4 web application. Though the Java Persistence API was introduced as part of the Java EE 5 platform, it is possible to use Java Persistence in a J2EE 1.4 application

Space4J is a simple database system that will let you work with Java Collections in memory. Instead of having to perform a SQL SELECT to fetch a User from a database table, you can just access the users map (java.util.Map) and call users.get(id). With Space4J, all your data is kept in memory inside the JVM. There is no need for an extra database application

iBatis is the most powerful, but not that simple. It comes with highest amount of XML-configuration, which has to be maintained during the whole lifecycle

In this article we introduce and compare two of the most popular open source persistence frameworks, iBATIS and Hibernate. We also discuss the Java Persistence API (JPA)

jPersist is an extremely powerful object-relational persistence API that is based on the Active-Record and Data-Mapper patterns. jPersist wraps JDBC functionality and can work with any relational database, and any type of connection resource

We've just released the Early Draft of the Java Persistence 2.0 specification, so I thought it would be a good time to report on some of the work we've been doing in the JSR 317 Expert Group.

So, another JPA tutorial. What makes this one different? Well, for one thing, this one comes with a working, downloadable project that works with Eclipse, NetBeans, and IntelliJ IDEA 7. It's packaged with Hibernate, Toplink, and OpenJPA. And it's been tes

In this article, you will see how elegantly data persistence can be handled in an object-oriented manner just with the help of JPA annotations.

This talk covers the key aspects of the Java Persistence API and its role in the development of EJB 3 app, including use of the EntityManager API, persistence...