MicroStream abstracts the Java persistence layer so you can think about data persistence in an object-oriented way. Here's a hands-on introduction. MicroStream is one of the most interesting projects ...
Sun Microsystems is looking to make life easier for Java developers by seeking a common ground on a data persistence model. In a letter to the “Java Technology Community” on Friday, specification ...
The Perst open-source project is available as a free download, though a licence must be purchased for commercial or closed-source products. The object-oriented database comes in Java and C# versions.