Rebuilding the Project Management and Employee Services Application  

Use

In this tutorial you learn how to implement the Project Management and Employee Services persistence and business logic.

Procedure

The implementation comprises the following steps:

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       1.      Developing the Persistence Entities

As a first step, you implement the application data model using persistence entities. Using the Dali object-relational (O/R) mapping tools, you can easily generate the entities from the database tables that already exist in your DB.

       2.      Developing the Session Beans

Next you implement the business logic for project and employee management using session beans.

       3.      Developing the Message Driven Bean

Using a message-driven bean, you enable the application to use Java Messaging Service (JMS) and to record each change that is made to projects in a project history.