Link to the University of Pittsburgh Homepage
Link to the University Library System Homepage Link to the Contact Us Form

Digress: A Deductive Interface to a Relational Database

McLean, Stuart and Weise, Charlotte (1988) Digress: A Deductive Interface to a Relational Database. Technical Report. School of Library and Information Science, University of Pittsburgh, Pittsburgh, PA.

[img] Plain Text (licence)
Available under License : See the attached license file.

Download (1kB)


Databases with inferencing capabilities have a practical as we;; as a theoretical interest because they have the potential to combine the efficient use of secondary storage and multi-user controls common to databases ,management system with the capabilities of expert system technology. A relational database is a knowledge representation scheme in which detuctive inferences are valid logical consequences of information contained in the database under the closed world assumption, the domain closure assumption, and the unique names assumption. Since the database relational calculus can be expressed as a first order language, it can be utilized to perform deductive reasoning. This paper reviews the theoretical and practical justifications for providing current database technology with inferencing capabilities and reports on a current research project which implements a deductive retrieval in INGRES, using the DBMS data manipulation language QUEL and its interface language EQUEL.


Social Networking:
Share |


Item Type: Monograph (Technical Report)
Status: Published
CreatorsEmailPitt UsernameORCID
McLean, Stuart
Weise, Charlotte
Monograph Type: Technical Report
Date: July 1988
Date Type: Publication
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Publisher: School of Library and Information Science, University of Pittsburgh
Place of Publication: Pittsburgh, PA
Institution: University of Pittsburgh
Department: School of Library and Information Science
Schools and Programs: School of Information Sciences > Library and Information Science
Refereed: No
University of Pittsburgh Series: iSchool Research Report Series
Other ID: LIS009/IS88009
Date Deposited: 11 Apr 2013 17:32
Last Modified: 20 Dec 2018 00:55


Monthly Views for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item