environment entry

An element of a deployment descriptor that defines a value for an enterprise bean. The value declared for an environment entry takes effect in a particular deployment environment. By defining environment entries, you can specify different behaviors for different deployment environments, such as the name of a JDBC driver and the name of a JDBC data source that differ depending on where a J2EE application is deployed. You can override the value specified for an environment entry at the EJB module level and the J2EE application level.

An environment entry is not an operating system environment variable. An environment entry exists in a deployment descriptor and possibly in the application server to which a J2EE application is deployed.