Invention Grant
- Patent Title: Index maintenance based on a comparison of rebuild vs. update
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Application No.: US16002885Application Date: 2018-06-07
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Publication No.: US10579608B2Publication Date: 2020-03-03
- Inventor: Yuan-chi Chang , Jason Crawford , Liana L. Fong , Wei Tan
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Anthony Curro, Esq.
- Main IPC: G06F16/00
- IPC: G06F16/00 ; G06F16/22

Abstract:
A method, system and computer program product for index maintenance in a computer system comprising a plurality of nodes, a database, and an index to the database. In one embodiment, the method comprises, for a defined period of time, building a snapshot of selected change requests received by the nodes to change the database. After this defined period of time, a selection is made, based on specified criteria, whether to rebuild a new index to the database, or to add entries to a current index. When the selection is to rebuild a new index, the new index is rebuilt based on data in the database and in the change requests in the snapshot. When the selection is to add entries to a current index, entries are added to the current index based on data in the database and in the change requests in the snapshot.
Public/Granted literature
- US20180285400A1 INDEX MAINTENANCE BASED ON A COMPARISON OF REBUILD VS. UPDATE Public/Granted day:2018-10-04
Information query