Database access system with optimizable expressions
US5960425A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | May 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99936
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A database access system responds a user database access request by restructuring a requested database based on two sets of expressions. Expressions are instructions for generating a new database from a starting database modeled as a starting edge-labeled tree by using pattern matches. Expressions always generate an edge-labeled tree allowing a sequence of expressions to be processed to restructure the starting tree. The database access system divides the database restructuring process into two sets of expressions. A first set of expressions is constructed based on subscriber requirements and a second set of expressions is constructed based on particular user requests. The first and second expressions are optimized by composition and the requested database is restructured based on the composed expression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.