Specifying queries as relational expressions: the SQUARE data sublanguage
Communications of the ACM
A relational model of data for large shared data banks
Communications of the ACM
Formal definition of mappings in a data base
SIGMOD '77 Proceedings of the 1977 ACM SIGMOD international conference on Management of data
Compiler Construction for Digital Computers
Compiler Construction for Digital Computers
SEQUEL: A structured English query language
SIGFIDET '74 Proceedings of the 1974 ACM SIGFIDET (now SIGMOD) workshop on Data description, access and control
INGRES: a relational data base system
AFIPS '75 Proceedings of the May 19-22, 1975, national computer conference and exposition
Views, authorization, and locking in a relational data base system
AFIPS '75 Proceedings of the May 19-22, 1975, national computer conference and exposition
AFIPS '75 Proceedings of the May 19-22, 1975, national computer conference and exposition
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AQL is a query language based on a data base management system which uses Codd's relational model of data. It has been designed mainly to be used by the nonspecialist in data processing for interactive problem solving, application building, and simulation. Ease of use is achieved by providing an interface which allows the use of default options, synonyms, and definitions of attributes, inference, and the possibility of interactive completion of the query (i.e., menu). AQL combines the capabilities of the relational model of data with the powerful computational facilities and control structure of the host programming language (i.e., APL). A prototype version of AQL, which has been implemented, is reviewed.