Accession Number : ADA138153

Title :   User-Friendly Interface to the Roth Relational Database.

Descriptive Note : Final rept. 6 Jun-16 Dec 83,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : VanKirk,D W

PDF Url : ADA138153

Report Date : 16 Dec 1983

Pagination or Media Count : 150

Abstract : A Friendly Interface to a Relational Algebra Database System was created on the Universal Relation concept. This concept allows the user to relate to the total database as a single relation. The user inputs a query using attributes of the single relation. The interface then creates the Universal Relation by way of relational algebra JOINs. Tuples of this relation are SELECTed according to constraints placed on attributes in the query (i.e. CITY = NEW YORK), and a PROJECTion of attributes desired is made from the result. Limitations of the interface are: 1. All relations in the database must be JOINable without data loss. 2. The query must start with a verb. (Author)

Descriptors :   *Man computer interface, *Data bases, *Systems analysis, Instructions, User needs, Natural language, Syntax, Algebra, Interrogation, Programming languages, Modules(Electronics), Theses

Subject Categories : Administration and Management
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE