What Is an Entity Bean?
An entity bean represents a business object in a persistent storage mechanism. Some examples of business objects are customers, orders, and products. In the Application Server, the persistent storage mechanism is a relational database. Typically, each entity bean has an underlying table in a relational database, and each instance of the bean corresponds to a row in that table. For code examples of entity beans, please refer to Chapters 26 and 27.
What Makes Entity Beans Different from Session Beans?
Entity beans differ from session beans in several ways. Entity beans are persistent, allow shared access, have primary keys, and can participate in relationships with other entity beans.
Persistence
Because the state of an ...
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