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Entity Beans
by Dale Green
An entity bean represents an entity kept in a persistent storage mechanism, usually a database. A business application, for example, might use a database to store business entity objects such as accounts, customers, orders, and products. Inside the J2EE server, this application would represent the business entity objects with entity beans.
- Characteristics of Entity Beans
- Persistence
- Shared Access
- Primary Key
- A Bean-Managed Persistence Example
- Entity Bean Class
- The EntityBean Interface
- Home Interface
- Remote Interface
- Tips for Running the AccountEJB Example
- Mapping Table Relationships For Bean-Managed Persistence
- One-to-One Relationships
- One-to-Many Relationships
- Many-to-Many Relationships
- About Container-Managed Persistence
- A Container-Managed Persistence Example
- Primary Key Class
- Creating a Primary Key Class
- Class Requirements
- Bean-Managed Persistence and the Primary Key Class
- Container-Managed Persistence and the Primary Key Class
- Getting the Primary Key
- Handling Exceptions
- The Life Cycle of an Entity Bean
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