In addition to accessing primitive properties, most SDO applications also require navigation up and down parent-child data object relationships (between contact and address, for example).
除了访问原始属性外，多数sdo应用程序还需要上下导航父子数据对象关系(例如，在联系人和地址之间导航)。
Each of the J2EE scopes has a context in which primitive data and object references can be associated (stored) for use by other components that share the same context.
每种J2EE作用域都有一个上下文，在这个上下文中可以关联(存储)基本类型的数据和对象引用，以供享有同一上下文的其他组件使用。
The anchoring construct in the SDO framework is the data object container, which consists of data objects and primitive type members.
sdo框架之中的固定构筑是数据对象容器，它由数据对象以及主要的类型成员组成。
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