Welcome to Derby! Derby is a full-featured, open source relational database management system (RDBMS) that is based on Java™ and SQL.
Derby is written and implemented completely in the Java programming language. Derby provides users with a small-footprint standards-based database engine that can be tightly embedded into any Java based solution. Derby ensures data integrity and provides sophisticated transaction support. In the default configuration there is no separate database server to be installed or maintained by the end user. For more information on Derby, visit the Derby Web site at http://db.apache.org/derby.
Before you install Derby, you should understand the deployment options and system requirements.