Computer program product for database relational extenders

This invention is directed to relational extenders for a computer-based relational database. Each relational extender includes at least one column, in a first, business, table containing a user defined application database, dedicated to object handles for defining the complex data type of an object;...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: TUNG, FRANK CHIN, HA, TRI QUAC, JANG, JING-SONG, FALLSIDE, DAVID COUTTIE, HO, JEAN C, ANDERSON, MATTHEW PAUL, HEMBRY, DOUGLAS MICHAEL, WILMOT, GERALD JOHANN, NIBLACK, CARLTON WAYNE, MATTOS, NELSON, VO, MIMI PHUONG-THAO THI, PETKOVIC, DRAGUTIN, UHROWCZIK, PETER PAVAL, DONN, SIYI TERRY, YANKER, PETER C, CHENG, JOSEPHINE MIN-KUNG
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:This invention is directed to relational extenders for a computer-based relational database. Each relational extender includes at least one column, in a first, business, table containing a user defined application database, dedicated to object handles for defining the complex data type of an object; a second, attribute, table containing at least one column defining a unique characteristic associated with the one object and one column dedicated to containing the object handle; and a third, metadata, table containing at least one column defining a common characteristic associated with all objects defined within the business table and one column dedicated to containing the object handle and at least one column dedicated to containing a reference to object data associated with the object. The relational extender further includes a fourth table containing a reference to each object handle column defined in the first table, a fifth table containing the names of the second and third tables for each object defined in the first table, a sixth table containing a reference to each object handle removed from the first table and including one column dedicated to containing a reference to the location of the object data associated with the removed object handle, and a seventh table having at least one column which describes a property of the data type of each object defined in the first table. The relational extender further includes an eighth table as a temporary holding table for the second table, and a ninth table as a temporary holding table for the third table. Both the eighth and ninth tables are used in conjunction with the extender triggers to ensure data integrity.