The functional data model and the data languages DAPLEX
ACM Transactions on Database Systems (TODS)
The design and implementation of INGRES
ACM Transactions on Database Systems (TODS)
A relational model of data for large shared data banks
Communications of the ACM
LSL: a Link and Selector Language
SIGMOD '76 Proceedings of the 1976 ACM SIGMOD international conference on Management of data
Automatic program generation for processing a high level relational-like query language
ACM '79 Proceedings of the 1979 annual conference
Design of the genealogical information system
SSDBM'81 Proceedings of the 1st LBL Workshop on Statistical database management
Design of the genealogical information system
SSDBM'81 Proceedings of the 1st LBL Workshop on Statistical database management
The GENISYS data definition facilities
SSDBM'83 Proceedings of the 2nd international workshop on Proceedings of the Second International Workshop on Statistical Database Management
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This paper describes the query language of the Genealogical Information System (GENISYS) which provides users with a high level, relational-like view of their data combined with the ability to reference attributes in associated relations by specifying paths from source relations to target relations. The emphasis in the presentation is on the use and implementation of the link selectors used for specifying paths between relations. Link selectors allow users a convenient mechanism for formulating multiple relation queries which are often complex in other query languages.