Transaction process systems are systems with massive data bases and many synchronous users that are executing data base transactions. Samples of such systems embody systems for reservations, banking, master card process, securities market etc. They need high availableness and quick time interval for many synchronous users. Electronic network is crucial to interconnect the many systems that are concerned in transactions. Whenever a dealing is performed, the small print of dealings are transferred to any or all the servers within the network and therefore the data bases within the server should be updated messages are send from the purpose wherever transaction takes place to any or all servers for change data bases in servers so data integrity is preserved.
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