Java DB is a relational database management system that is based on the Java programming language and SQL. Java DB is the Oracle release of the Apache Derby project, the Apache Software Foundation's (ASF) open source relational database project.
The Java DB product includes Derby without any modification whatsoever to the underlying source code.
Because Java DB and Derby have the same functionality, the Java DB documentation refers to the core functionality as Derby.
The Java DB 10.6 documentation is based on the Derby 10.6 documentation. References to "Derby" in the Java DB documentation should be understood as synonyms for "Java DB."
Oracle has made changes to the Apache Derby documentation. This manual is identical to Tuning Derby, with the following exceptions: