Adding extrinsic data columns to an existing database schema using a temporary column pool
US7672966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2004 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Nov 7, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99943
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A facility for storing extrinsic data is described. The facility receives data associated with a distinguished extrinsic data item of a specified type. The facility determines whether a flexible column directory table contains an entry mapping the distinguished extrinsic data item to a flexible column pool column. If the flexible column directory table does not contain an entry mapping the distinguished extrinsic data item to a flexible column pool column, the facility creates an entry in the flexible column directory table that maps the distinguished extrinsic data item to an available flexible column pool column of the specified type. The facility then copies the received data to the flexible column pool column mapped from the distinguished extrinsic data item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.