发明名称 System and method for data storage and retrieval
摘要 An improved method for creating and searching data files in a database is described. The system and method uses a memory in which is stored a main data file having a plurality of data records each having a data field containing data representative of an alpha-numeric product descriptor. A bitmask generator generates a bitmask value representative of the data in the data field of each data record and appends to each data record stored in the memory a bitmask data field containing the bitmask value representative of the data in the data field of the corresponding data record. A prefix generator generates a plurality of prefix files that are stored in the memory, the prefix files including a copy of selected data records of the main data file, the data records being selected as a function of the prefix of the alpha-numeric product descriptors corresponding to the data in the data fields of the data records. In performing a search to obtain information, both the appended main data file and the prefix files are available to the searching procedure.
申请公布号 US2004093330(A1) 申请公布日期 2004.05.13
申请号 US20030640940 申请日期 2003.08.14
申请人 W.W. GRAINGER, INC. 发明人 WESTPHAL GEOFFRY A.
分类号 G06F17/30;(IPC1-7):G06F17/30 主分类号 G06F17/30
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