System for modifying persistent database based upon set of data elements formed after selective insertion or deletion
US5317730A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1991 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Jan 11, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/174
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for dynamic processing of unbounded data streams. The system is adapted to operate on a data processing system including a display panel and a database stored on a non-volatile storage device. An input stream of data elements is received by the system from the database. The input stream of data elements is designated as a source data stream. An insert list of data elements is provided to maintain a first set of data elements arranged in sequence according to a corresponding sequence value; the first set of data elements is not contained in the source data stream. A delete list of data elements is provided to maintain a second set of data elements presently in the source data stream, and arranged in sequence according to a corresponding sequence value. A flagged list of data elements selected for further processing by a user, contains a third list of data elements arranged in sequence according to a corresponding sequence. In order to identify a data element to be returned to the display panel in response to a request for a current element in an apparent list of data elements, the system filters the source data stream through the insert list of data elements to o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.