The Research On Application Of Mobile Database In Management Information System

The Mobile Database is a branch of the study of Distributed Database and Distributed computing. The Mobile Database can be thought as the extension of the traditional Distributed Database. But as the different characteristics between the Mobile computing and the traditional Distributed computing, the technique for Distributed Database can't be used in Mobile Database completely.Firstly, in this paper, this paper introduced several key technologies used in Mobile Database, focusing on the study of data replication, cache and data consistency. Based on the above knowledge we put forward a new strategy to handle the disconnected operation, this strategy separately studied on the data management on cache in mobile client and data synchronization, furthermore, it combine two aspects to attain the data accessing validity for mobile client in disconnected situation and committing probability of temporary transaction reprocessed in the server.Furthermore, this paper introduced the architecture and main module in EMIS, focusing on the schedule module that applied in Mobile Database theoretically.