Database system providing methodology for property enforcement
US6801905B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99934
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A database system providing methods for eager and opportunistic property enforcement is described. Plan fragments are generated for obtaining data requested by a query. Plan fragments are grouped together in classes based upon tables of the database covered by each plan fragment. For each class, a particular plan fragment having the lowest execution costs for obtaining the data requested by the query is determined. If grouping is not required at a given class, an operator enforcing ordering is added to this particular sub-plan. However, if grouping is required at the given class, an operator enforcing both grouping and ordering is added to this sub-plan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.