This web page describes the basic ideas behind relational database. It focuses on how database tables can be used, with a quick overview of how Structured Query Language (SQL) provides access to database data.
This web page describes database setup procedures for use with NetBeans, GlassFish, and Derby all running on the same machine. This configuration is not suitable for team projects.
This web page summarizes both SQL and JDBC.
This web page describes the use of JDBC with an emphasis on its use in JSF applications.
This web page describes the most important SQL commands. It is brief but has links to more information from Derby documentation pages.