INFORMATICA

Informatica

0868-4952 0868-4952

INF9104

10.3233/INF-1998-9104

Research article

From QBE to Graph Queries

Grechko

Valery

vogrec@olgal.pp.kiev.ua Tulchinsky

Peter

Tulchinsky

Vadim

Institute of Cybernetics, Acad. Glushkova 40, 252022 Kiev-22, Ukraine

01 01 1998

9 1 51 64 01 01 1998

An extention of the QBE language in the form of graph queries is proposed for databases having complex schemata. These graph queries provide user interface for the ER model, like QBE queries provide user interface for the relational model. The implementation and usage of graph queries of ER-based “MicroPoisk” DBMS are presented.

Keywords DBMS database ER-model user interface QBE relational/network enterprise model