Based on the above background, this pape designs and achieves a mainframe-based banking system by self-development, then proposes some query optimization strategy based on the system.
根据以上背景，本文通过自主开发和设计实现了基于主机的银行业务系统，并在此基础上提出了查询优化的策略方案。
Rewrite is an optimization strategy that transforms a valid query into a semantically equivalent form that can be more efficient to execute.
重写是一种优化策略，它将一个有效的查询转化成语义上相等的一种新形式，这种新的形式执行起来更为高效。
On this basis, it raises a query optimization model for OQL by introducing some query theories of RDB into the query process of OODB, and gives its implement strategy.
在此基础上，将RDB的一些查询理论应用于OODB的查询中，提出了一种OQL的查询优化模型，并给出其实现策略。
应用推荐