G. Ramalingam
Theoretical Computer Science
This paper presents a data sublanguage called SQUARE, intended for use in ad hoc, interactive problem solving by non-computer specialists. SQUARE is based on the relational model of data, and is shown to be relationally complete; however, it avoids the quantifiers and bound variables required by languages based on the relational calculus. Facilities for query, insertion, deletion, and update on tabular data bases are described. A syntax is given, and suggestions are made for alternative syntaxes, including a syntax based on English key words for users with limited mathematical background. © 1975, ACM. All rights reserved.
G. Ramalingam
Theoretical Computer Science
Donald D. Chamberlin
AFIPS Fall Joint Computer Conference 1971
Bowen Zhou, Bing Xiang, et al.
SSST 2008
Frank R. Libsch, S.C. Lien
IBM J. Res. Dev