Traditional IP address registries depend on static hierarchical structures, which are not sufficient for wireless.
传统的IP地址注册表依赖于一个静态的分等级结构，这并不能满足无线应用。
They address modeling of data flow, representation of events and triggers, correct termination of a process, and reuse of activities in hierarchical process models.
它们涉及如何建立数据流模型，如何表示事件和触发器，如何正确终止流程以及如何在分层流程模型中重用活动。
They also address the two shortcomings of hierarchical databases listed above. The major characteristics of relational type databases are.
关系型数据库已经超越了持久性存储设备的角色，它们还解决了上述层次数据库的两个缺点。
应用推荐