发明授权
- 专利标题： Method, apparatus and computer program for retrieving data
- 专利标题（中）： 用于检索数据的方法，装置和计算机程序
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申请号： US10914705申请日： 2004-08-09
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公开(公告)号： US08818990B2公开(公告)日： 2014-08-26
- 发明人: Stephen J. Hobson , Stephen J. Todd
- 申请人： Stephen J. Hobson , Stephen J. Todd
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理机构： CRGO Law
- 代理商 Steven M. Greenberg, Esq.
- 优先权： GB0322844.2 20030930
- 主分类号： G06F17/30
- IPC分类号： G06F17/30
摘要：
A data item is retrieved from a data store in a data processing system. The data processing system comprises an index, which at least partially indexes the data store, and also a partiality definition store. The partiality definition store indicates a part of the data store which is referenced by the partial index. A request is received for a data item from the data store and responsive to determining that the requested data item is not referenced by the partial index, the data store is searched by using the partiality definition store to avoid searching a part of the data store which is known to be indexed.
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