As a Java-only database, it does not compete directly against mainstream relational database servers, such as DB2, Oracle or Microsoft's SQL Server, according to industry executives.

Java Database Connectivity (JDBC) is an application program interface (API) packaged with the Java SE edition that makes it possible to standardize and simplify the process of connecting Java ...

Here's a quick JDBC with HSQLDB tutorial to get you up and running with Java database connectivity and the popular HyperSQL database.

IBM to make Java database open source Big Blue is creating an open-source project around Cloudscape, a niche Java database, CNET News.com has learned.