EJB QL is Query Language provided for navigation across network of enterprise beans - EJB

Q.  EJB QL is a Query Language provided for navigation across a network of enterprise beans and dependent objects defined by means of container managed persistence.
- Published on 22 Jul 15

a. True
b. False

ANSWER: True
 

    Discussion

  • Nirja Shah   -Posted on 14 Dec 15
    - The above statement is true.

    - EJB QL is a Query Language provided for navigation across a network of enterprise beans and dependent objects defined by means of container managed persistence.

    - It is introduced in the EJB 2.0 specification. It is a query language which defines the finder methods for entity beans with container managed persistence and is portable across containers and persistence managers.

    - It is used for the queries of two types of finder methods: Finder methods that are defined in the home interface of an entity bean and which return entity objects.

    - Select methods, which are not exposed to the client, but which are used by the Bean Provider to select persistent values that are maintained by the Persistence Manager or to select entity objects that are related to the entity bean on which the query is defined.

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