Mobile Database Technology Research And Application

With the wireless network technology and the rapid development of increasingly mature,mobile computing and mobile data processing has become very important role.Mobile database so that people can be in any place,anytime access to the database on arbitrary data.It opened up a database application for a new field of parallel and distributed processing technology in the development of a very important significance.However,the mobile database systems,wireless mobile network nodes, low bandwidth and disconnect and so brought us new challenges.Existing mobile database functions weak,most of the existing mechanisms and algorithms are too many assumptions and greater limitations,some of the key features not support it.Mobile database technology is distributed database and distributed computing technology of the important branches.Mobile database is mobile computing environment in order to meet the data needs of access and development and produce, usually can be seen as a traditional distributed database expansion.Mobile computing environment compared with traditional distributed computing environment with the new characte- ristics,traditional distributed database technology can not be fully applied to the mobile database.Based on the application of mobile computing devices has become increasingly popular.Widespread use of personal digital assistants(PDA), smart phones and other mobile handheld devices anytime,anywhere for business activities.Users will be applied data from the central database system downloaded to mobile handsets,and its off-line access and modify.From time to time the system with a central database connected to the synchronization of data updates.In order to adapt to the development of mobile applications,a new technology - Mobile database technology came into being,and becomes a study of a hot issue.