The JSR 220 specification defines Enterprise JavaBeans 3.0. One of its primary goals is to simplify the creation, management, and storage of entity beans. Working towards that goal, Sun Microsystems and supporting community developers created a new application programming interface (API) that lets you use "plain old Java objects" or POJOs as your persistable entities. The Java Persistence API facilitates your use of POJOs as entity beans and significantly reduces the need for complicated deployment descriptors and extra helper beans. Additionally, you can even use the API in desktop applications.

Creating an effective data migration testing strategy is critical to reducing risk and delivering a successful migration. This article offers thoughts and recommendations on how to create a more consistent data migration testing methodology using either a black box or a white box approach.

Java developers can get a lot of mileage out of storing objects directly in an object-oriented database like db4o. Learn how db4o handles three concerns central to Java enterprise development: transactions, distributed data management, and Web application security.

Almost every application has to access data to do its work. Hades is an open source library that's built on top of JPA and Spring to aid the creation of DAOs by reducing the effort required.

People love Ajax applications so much that they are willing to use them instead of their desktop equivalents. The only problem occurs when they fail to have network access. This is when an offline feature is necessary. Apache Derby is a great option for enabling offline access to Ajax-powered applications. Learn how to use Apache Derby as a local data store that can be used to take your Ajax application offline.

Oracle technologists explain the cloud computing implementation as it relates to database as a service (DBaaS). Cloud computing encompasses the IT infrastructure resources, which include networks, storage, servers, applications, and services. DBaaS is a subset of the overall cloud concept, specifically focused on the last two resources, applications and services.

When building Web applications with the Google Web Toolkit, using Berkeley DB Java Edition as a persistent data store can reduce project costs significantly.

As mobile developers, our applications will need to both aesthetically display the results of our data queries, as well as give users an intuitive interface to store and insert data. In this article by Jason Wei, author of Android Database Programming, we will focus on the former – on binding data to the user interface (UI) and will look specifically at various classes that will allow us to bind our data in the form of lists (the most common and intuitive way to display rows of data).

Many developers have asked how to use GWT and Hibernate together. Although you can find numerous discussions about this topic on the GWT Developer Forum, we thought it would be beneficial to sum up some of the most popular strategies, and highlight their advantages and shortcomings in the context of GWT application development.

HTML5 will reshape the web experience and line-of-business applications. With the offline capabilities and local persisted storage features, you can deliver the same rich user experiences online and offline that were previously available only in proprietary desktop application development frameworks. In this article, learn how to leverage HTML5 offline capabilities and local persisted storage features. An example application illustrates how to avoid common problems.