Develop applications that use EJB query

Subtopics

• EJB query language
  EJB query language enables us to write queries based on entity beans without knowing the underlying relational schema.
• Use the dynamic query service
  There are times in the development process when we might prefer to use the dynamic query service rather than the regular EJB query service (which can be referred to as deployment query). During testing, for instance, the dynamic query service can be used at application run time, so we do not have to re-deploy the application.