Design and Implementation of a Client/Server Model and Concurrency Control theAO2DB System

An implementation method are introduced to self developed active object oriented database system AO2DB in C/S architecture. By extending architecture to single user prototype system and by applying network and multi tread programming, the AO2DB system of C/S architecture is built, multi clients' operation to database are realized. The ability of system is enhanced. The concurrency control mechanism is introduced also in Client/Server architecture.