Apache Derby—Off to the Races: Includes Details of IBM® Cloudscape™

Development SQL

There are a number of SQL features that are normally associated with application development or database administration. Although these features can be used with interactive programs such as ij, end users who only want to query the contents of a database don't normally use them. This section describes five of these features:

• Schemas

• User-defined functions (UDFs)

• Triggers

• Stored procedures

• Commit or rollback operations

Schemas

A schema is a database entity that represents a collection of named objects within an Apache Derby database. The schema name is actually part of the fully qualified name of the object being accessed. When database objects are being defined using the SQL CREATE <db-object> statement, a qualifier or schema name ...