A graphical knowledge level approach for user-database interaction

• Main Authors: TAN, K., CHAN, H., SIAU, Keng
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 1990
• Subjects: Databases and Information Systems; Graphics and Human Computer Interfaces
• Online Access: https://ink.library.smu.edu.sg/sis_research/9676; https://ink.library.smu.edu.sg/context/sis_research/article/10676/viewcontent/00139408.pdf
• Institution: Singapore Management University

The authors propose a novel user interface, the Graphical Knowledge Level interface, for user-database interaction. This interface addresses two of the current research problems: the semantic inadequacy of the relational model and the logical data dependence of the relational languages. The interface is more user-friendly than the SOL interface and the Universal Relation interface, as it employs the graphical approach. The semantic inadequacy problem is alleviated by using an enhanced entity-relationship model. This data model includes abstraction concepts such as aggregation, generalization, and categorization. A formal, high-level Graphical Knowledge Level Query Language, GKQL, which provides for both logical and physical data independence has also been designed.