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J2EE™ Tutorial, The by Beth Stearns, Monica Pawlan, Eric Jendrock, Kim Haase, Dale Green, Stephanie Bodoff

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Terminology

The following list defines some of the terms referred to in this chapter.

  • Abstract schema: The part of an entity bean’s deployment descriptor that defines the bean’s persistent fields and relationships.

  • Abstract schema name: A logical name that is referenced in EJB QL queries. You specify an abstract schema name for each entity bean with container-managed persistence.

  • Abstract schema type: All EJB QL expressions evaluate to a type. If the expression is an abstract schema name, by default its type is the local interface of the entity bean for which the abstract schema name is defined.

  • Backus-Naur Form (BNF): A notation that describes the syntax of high-level languages. The syntax diagrams in this chapter are in BNF notation.

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