Database reconstruction using embedded database backup codes
US5963961A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Nov 25, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Files are stored along with embedded codes containing information useful in reconstructing a failed database that normally contains information about the files. Multiple user files are stored in the form of a managed file, identified by a managed filename. Storage of the managed file includes a number of sub-steps, among them the generation and storage of a first frame marker including a recognition pattern, the managed filename, a next-frame locator, and a sequence number distinguishing the first frame marker from other frame markers. Next, a self-describing header is generated and stored adjacent to the first frame marker. A first one of the user files is stored adjacent to the self-describing header. The self-describing header and following user file are exclusively associated with each other, and the header contains certain information about the adjacent user file. Storage of the user file and self-describing header may be punctuated by one or more intermittent frame markers, which are preferably stored at fixed intervals along the managed file. The sequence of storing a self-describing header, a user file, and any intermittent frame markers is repeated until a predetermined co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.