Page map, metamap, and relation group file management supervised by operation means for allocating, storing, and searching friendly and exclusive data items
US5418949A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Sep 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99956
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A file storage management system for managing pages in a file, in which pages, data items belonging to a plurality of relations are stored. The file storage management system includes a data file for storing data items belonging to relations page by page, a page map file storing information representing positions at which data pages and empty pages are positioned in the file, a metamap file for storing metamap information representing whether or not the data empty pages and the data pages exist in each page map, relation group definition file for information representing whether relations are friendly relations or exclusive relations a page management unit for managing the data file, a page map management unit for managing the page map file, a metamap management unit for managing the metamap file, a relation group management unit for managing the relation group definition file, and page operation unit for operating the page management unit, the page map management unit, the metamap management unit, the relation group management unit so that a process for allocating data items belonging to relations to pages, and a process for searching for pages to be released from management in th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.