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Sams Teach Yourself J2EE™ in 21 Days by Peter Roxburgh, Andy Longshaw, Debbie Law, Dan Haywood, Martin Bond

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Day 6. Entity EJBs

Yesterday, you learned about Session beans, and how they provide a service to a specific client.

The major topics that you will be covering today are

  • How Entity beans represent domain objects, providing services that can be used by all clients

  • Two types of Entity beans—bean-managed persistence (BMP) and container-managed persistence (CMP)

  • How EJBs can provide a local interface in addition to their remote interface

  • Specifying, implementing, configuring, and deploying BMP Entity beans

  • Configuring and deploying EJBs from the command line rather than using a GUI

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