多层模式下通用数据存取层的设计与实现

Design and implementation of level of access of generalized database in multilevel model

在数据库应用开发中,数据库的操纵部分无疑是最重要的部分,也是影响整个系统运行性能的关键所在。沿用多层模式的系统设计理念,将数据库的存取功能以组件化的方式封装成独立的功能模块,即数据存取层。此种方式屏蔽了底层操作的复杂性以及不同种类数据库平台的差异性,为实现应用系统的高效、稳定以及良好的可维护性等目标,提出了一种科学的方法论与切实可行的技术手段。

In the development and application of database, the operational part of the database is crucial, it can affect the operational function of the whole system. A system design with multilevel model is introduced, in which the access facility of the database is packed in different functional modules, which forms a level of data access. In this way, the complexity of the bottom operation and the diversity of the varieties of databases are avoided, and a scientific measure and practical technique for the implementation of the efficiency, stability and maintainability of the application system is provided.