DATABASE PATENTS
U.S. PATENT NUMBER 5,604,899
- Data relationship processor with unlimited expansion capability
- Effective Filing Date: May 21, 1990
- Patent Issue Date: February 18, 1997
U.S. PATENT NUMBER 5,617,567
- Data processing system and method for retrieving an entity specified in a search path from a relational database
- Effective Filing Date: May 21, 1990
- Patent Issue Date: April 1, 1997
U.S. PATENT NUMBER 5,652,882
- Data processing system and method for detecting mandatory relations violation in a relational database
- Effective Filing Date: May 21, 1990
- Patent Issue Date: July 29, 1997
U.S. PATENT NUMBER 5,675,779
- Data processing system and method for maintaining cardinality in a relational database
- Effective Filing Date: May 21, 1990
- Patent Issue Date: October 7, 1997
U.S. PATENT NUMBER 5,826,259
- Easily expandable data processing and method
- Effective Filing Date: May 21, 1990
- Patent Issue Date: October 20, 1998