As you can see, the MDB Bean type is message-driven, and the EJB uses container managed transactions. 可以看到,MDBBean类型是消息驱动的,并且EJB使用容器管理(CM)的事务。
Defines the fields that are container managed with the appropriate columns in the database table that they represent. 用数据库表中对应的列,对代表列的容器管理(CM)字段进行定义。
Container Managed(CM) Persistence over Anything ( CMP / A ) extends the CMP entity to support any back-end system that supports create, retrieve, update, and delete methods. 支持任何系统的容器管理(CM)持久性(ContainerManagedPersistenceoverAnything,CMP/A)扩展了CMP实体以支持任何可以支持创建、检索、更新和删除方法的后端系统。
No support for container managed security. 不支持容器安全管理。
Approach : The Object-Relational-Mapping-based container managed persistence does not clutter the application code with the relational nature of storage. 方法:基于对象关系映射的容器管理(CM)持久化使应用程序代码不会与存储的关系性质混合在一起。