Database management system with a multiple-level cache arrangement
US6598119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Nov 17, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99952
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A data management system for storing data in a multiple-level cache arrangement of a database comprises a multi-tier cache memory for initially storing all data in summary form in a secondary cache which may be the database; a processor for receiving requests for data and for moving requested data from the secondary cache to a primary cache, wherein, when subsequent requests for data are received, the primary cache is searched before the secondary cache; and for periodically synchronizing and merging all data in the primary cache back into said secondary cache to refresh said primary cache and remove stale information. The system is particularly useful for managing a telecommunications system call detail summary database in which telephone call details are collected as AMA records after the calls terminate and the AMA records are forwarded to a call detail database for storage in summary form and analysis by an external system, for example, for fraud analysis or billing purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.