SYSTEM FOR ENHANCING ACCESS EFFICIENCY TO DATA BASE AND ITS METHOD

摘要

[PROBLEMS] Access efficiency to data base is enhanced. [MEANS FOR SOLVING PROBLEMS] A data base stores a value corresponding to each one of a plurality of keys. A system of the present invention executes a plurality of transactions on the data base, acquires a referred value of a key from the data base which is referred to each transaction in response to its execution, and records the same. In compliance with requests committed in a plurality of transactions, a reply is then requested for a result table judged and arranged for result of each transaction to show whether the values of the keys stored in the database remain unchanged by other transactions and maintain the referred values as they are. Further, it is judged whether each transaction is successful based on the result table in reply and a transaction judged to be successful is only committed.