Memory Database Applications, Accounting Background

With increasing of telecom industry's usesrs and portfolio, dealing with more than ten million call-bills in real time has been a telecom manager system's emphases and difficulty. Because the speed of tradition data operation basing on disk is more slowly than the data operation basing on main memory, it is necessary to use MMDB in the telecom manager system.Firstly, basing on the frame of UNICOM's manager system and technology of MMDB, this discourse narrates the share main memory's structure with the operation of UNICOM account background. Secondly, it brings forward the grid+T tree arithmetic basing on comparing with several popular index arithmetics. This arithmetic fits to deal data in share main memory. Thirdly, it narrates the workflow of the share main memory transaction commting processing and log manager, and the lock theory of the share main memory. Then the discourse discusses the share main memory's recovery structure, the important aspect of the system avoiding disaster. Finally, it presents the application of the share main memory with the function and requirement of credit control module.