Implementation of Concurrency Control by Wait_Die Algorithm

Concurrency control in distributed systemsis an important problem for the simultaneousexecution of transaction over a shared databasecan create several data integrity and consistencyproblem. The distributed system becomes moreand more important and attractive with progressin the areas of computer network system.Concurrency control is the activity of coordinatingconcurrent accesses to a database in a multiuserdatabase management system. The main technicaldifficulty in attaining this goal is to preventdatabase updates performed by one user frominterfering with database retrievals and updatesperformed by another. This system presentsconcurrency control for online sales system byusing Wait-Die Algorithm