Are natural language systems for database queries meetingtheir goals? And, are these goals appropriate? The recentlycompleted Advanced Language Project at New York Universitycombined a field experiment with two laboratory studies toexamine these issues by comparing performance between...

Efficient ways to process unanticipated queriesare a crucial prerequisite for the success ofgeneralized database management systems. A widevariety of approaches for improving the performanceof query evaluation algorithms have been proposed:logic-based and semantic transformations,...

In the database programming language PASCAL/R, theprogramming language PASCAL and concepts based on therelational data model are integrated. The paperinvestigates transformation strategies used in the PASCAL/Rsystem to evaluate queries with existential and universalquantifiers. Intermediate data...

The combined use of Database Management Systems (DBMS)and Artificial Intelligence-based Expert Systems (ES) ispotentially very valuable for modern business applications.The large body of facts usually required in business informationsystems can be made available to an ES through anexisting...

The central hypothesis of this paper is that database design andsystems design in general can be simplified considerably by tailoringthe design methods to a suitable range of applications. Domain-specificknowledge can be incorporated into a specialized database architecturethat leaves the...

Knowledge bases constitute the core of those Artificial Intelligenceprograms which have come to be known as Expert Systems. Anexamination of the most dominant knowledge representation schemes usedin these systems reveals that a knowledge base can, and possiblyshould, be described at several...

This paper focuses on data management aspects of computerizeddecision support systems which use interactive multiple criteriadecision methods. In this context, we point out the technicalrequirements for such systems and the importance of the datamanagement tool to MCDSS.After a discussion of...

A methodology is presented for selecting query languages suitable forcertain user types. The method is based on a trend model of querylanguage development on the dimensions of functional capabilities andusability. Expected developments are exemplified by the descriptionof quot;second...