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METHOD AND SYSTEM FOR RETRIEVAL FROM RELATIONAL DATA BASE AND INFORMATION RECORDING MEDIUM WHERE RETRIEVING PROGRAM FOR RELATIONAL DATA BASE IS RECORDED
METHOD AND SYSTEM FOR RETRIEVAL FROM RELATIONAL DATA BASE AND INFORMATION RECORDING MEDIUM WHERE RETRIEVING PROGRAM FOR RELATIONAL DATA BASE IS RECORDED
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机译：从关系数据库检索信息的方法和系统以及用于关系数据库的信息记录介质的记录方法
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摘要
PROBLEM TO BE SOLVED: To shorten a retrieval wait time and to decrease the necessary storage capacity and communication capacity. ;SOLUTION: A retrieving means 6 checks whether or not respective records meet given retrieval conditions in the order of keys from the record given a key of specified order, extracts and holds at least part of each record meeting the retrieval conditions, and counts how many times the retrieval conditions are met, thereby quitting the retrieval when the frequency reaches a specific frequency. At this time, an output means 8 outputs the record extracted and held by the retrieving means 6 and a order storage means 10 stores the order of the key added to the record having met the retrieval conditions last. Then a retrieval control means 12 when next retrieval is performed specifies the order stored in the order storage means 10 to the retrieving means 6, which is made to start retrieval.;COPYRIGHT: (C)2000,JPO
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