HyperSQL - Java Database

HyperSQL supports the widest range of SQL Standard features seen in any open source database engine. It offers a small, fast database engine which offers in-memory and disk-based tables and supports embedded and server modes.

Its major feature include:

• Java stored procedures and functions
• Java triggers
• Extensive JDBC interface support
• Persistence
• Embedded (into Java applications) and Client-Server operating modes
• Multiple databases per JVM
• ODBC support
• simple GUI database management tools

Commercial support is available.