|Author||Hammer, Michael M. ♦ Boyce, Raymond F. ♦ King, W. Frank ♦ Chamberlin, Donald D.|
|Source||ACM Digital Library|
|Publisher||Association for Computing Machinery (ACM)|
|Subject Keyword||Relational data model ♦ Interactive problem solving ♦ Tabular data ♦ Casual user ♦ Nonprocedural languages ♦ Relational completeness ♦ Database ♦ Relations ♦ Data sublanguages ♦ Query languages|
|Abstract||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.|
|Description||Affiliation: Massachusetts Institute of Technology, Cambridge, MA (Hammer, Michael M.) || IBM Research Lab., San Jose, CA (Boyce, Raymond F.; Chamberlin, Donald D.; King, W. Frank)|
|Age Range||18 to 22 years ♦ above 22 year|
|Education Level||UG and PG|
|Learning Resource Type||Article|
|Publisher Place||New York|
|Journal||Communications of the ACM (CACM)|
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