ACM SIGMOD Anthology VLDB dblp.uni-trier.de

Providing Time-Related Constraints for Conventional Database Systems.

T. Abbod, K. Brown, H. Noble: Providing Time-Related Constraints for Conventional Database Systems. VLDB 1987: 167-175
@inproceedings{DBLP:conf/vldb/AbbodBN87,
  author    = {T. Abbod and
               K. Brown and
               H. Noble},
  editor    = {Peter M. Stocker and
               William Kent and
               Peter Hammersley},
  title     = {Providing Time-Related Constraints for Conventional Database
               Systems},
  booktitle = {VLDB'87, Proceedings of 13th International Conference on Very
               Large Data Bases, September 1-4, 1987, Brighton, England},
  publisher = {Morgan Kaufmann},
  year      = {1987},
  isbn      = {0-934613-46-X},
  pages     = {167-175},
  ee        = {db/conf/vldb/AbbodBN87.html},
  crossref  = {DBLP:conf/vldb/87},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
BibTeX

Abstract

A model for a historical database is described which is based upon time-stamped tuples as the unit of storage. The model includes both physical and logical time-stamps. The technical characteristics of write-once laser discs prevent the use of double logical time-stamps. The model distinguishes version from correction-updates. It is shown that if set- valued attributes are involved the use of null values is unavoidable if back-dated correction-updates are allowed. A method of handling user-defined integrity constraint rules is outlined which involves the maintenance of a time-stamped trace of such rules. Such a trace is necessary for the proper handling of back-dated correction-updates. An outline of a system SIS-BASE is described which implements some of these ideas.

Copyright © 1987 by the VLDB Endowment. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its date appear, and notice is given that copying is by the permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires a fee and/or special permission from the Endowment.


Online Paper

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Printed Edition

Peter M. Stocker, William Kent, Peter Hammersley (Eds.): VLDB'87, Proceedings of 13th International Conference on Very Large Data Bases, September 1-4, 1987, Brighton, England. Morgan Kaufmann 1987, ISBN 0-934613-46-X
Contents BibTeX

References

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Referenced by

  1. Ellen Rose, Arie Segev: TOODM - A Temporal Object-Oriented Data Model with Temporal Constraints. ER 1991: 205-229
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