Some High-level Language Constructs for Data of Type Relation (Abstract).

Joachim W. Schmidt: Some High-level Language Constructs for Data of Type Relation (Abstract). SIGMOD Conference 1977: 9

@inproceedings{DBLP:conf/sigmod/Schmidt77,
  author    = {Joachim W. Schmidt},
  editor    = {Diane C. P. Smith},
  title     = {Some High-level Language Constructs for Data of Type Relation
               (Abstract)},
  booktitle = {Proceedings of the 1977 ACM SIGMOD International Conference on
               Management of Data, Toronto, Canada, August 3-5, 1977},
  publisher = {ACM},
  year      = {1977},
  pages     = {9},
  ee        = {http://doi.acm.org/10.1145/509404.509407, db/conf/sigmod/Schmidt77.html},
  crossref  = {DBLP:conf/sigmod/77},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

For the extension of high-level languages by data types of mode relation, three language constructs are proposed and discussed:

a repetition statement controlled by relations
predicates as a generalisation of boolean expressions
a constructor for relations using predicates.

The language constructs are developed step by step starting with a set of elementary operations on relations. They are designed to fit into PASCAL without introducing too many additional concepts.

Copyright © 1977 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.

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Journal Version

Joachim W. Schmidt: Some High Level Language Constructs for Data of Type Relation. ACM Trans. Database Syst. 2(3): 247-261(1977)