Invention Application
- Patent Title: REORDERING OF DATABASE RECORDS FOR IMPROVED COMPRESSION
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Application No.: US14644762Application Date: 2015-03-11
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Publication No.: US20150347426A1Publication Date: 2015-12-03
- Inventor: Garth A. Dickie , Jeffrey M. Keller
- Applicant: International Business Machines Corporation
- Main IPC: G06F17/30
- IPC: G06F17/30

Abstract:
According to embodiments of the present invention, apparatus, systems, methods and computer program products for sorting and compressing an unordered set of data records from a structured database are provided. Fields of the unordered set of data records are prioritized based on an impact of those fields to a compression scheme for column-oriented compression. The unordered set of data records are sorted based on the prioritized field(s) with a greatest impact on the performance metric. Data of the sorted data records are compressed according to a compression scheme. In some embodiments, prioritizing the fields may be based on an anticipated level of usage of data within those fields and/or a cost function associated with a performance metric as well as optimization of compression. A performance metric may include a faster computational time, reduced I/O computation, faster scan time, etc.
Public/Granted literature
- US09910855B2 Reordering of database records for improved compression Public/Granted day:2018-03-06
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