分布式数据库数据访问原理及仿真

Access principle and simulation based on distributed data base

针对分布式程控交换机内部的关系型数据库,以阿尔卡特的全分散控制交换机为对象,研究了数据访问原理及数据库对各种关系的访问过程。对分布式程控交换机的数据库结构作了深层分析,讨论了数据访问模型,用宏指令编程完成了数据访问仿真系统设计,并给出了仿真模型的确定方法。通过对实关系的访问过程分析,说明了该方法的可行性,并推导出当进行大批量数据访问时,该方法可提高数据修改和查询效率。经在交换机上运行,结果稳定可靠。

In the interior relational database of the distribution SPC, choosing the Alcatel switching system (S1240) as research object,the data visiting theory and database accessing process to all kinds of relations are discussed.The database structure of distribution SPC and the data visiting model are analyzed. A detail data visiting simulate system and the determining parameters method of simulation model are given. In the real application, it illustrated that the model is feasible. Furthermore, the efficiency of data modification and inquiring are improved when accessing bulk data by using micro command. The result are proved to be stable and reliable after use on the exchange device.