System and methodology for parallel query optimization using semantic-based partitioning
US8126870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2005 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Sep 26, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24532
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and methodology for parallel query optimization using semantic-based partitioning is described. In one embodiment, for example, in a database system comprising a database storing data in database tables, a method is described for improving query performance by dynamically partitioning the data, the method comprises steps of: receiving a query requesting data from the database; generating a plurality of subplans for executing the query, each subplan including one or more operators for performing relational operations; adding operators for partitioning data and performing a given relational operation in parallel to at least some of the plurality of subplans; and building a plan for execution of the query based, at least in part, upon selecting subplans having favorable execution costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.