Consistency and Transactions in CAD Database.

Thomas Neumann, Christoph Hornung: Consistency and Transactions in CAD Database. VLDB 1982: 181-188

@inproceedings{DBLP:conf/vldb/NeumannH82,
  author    = {Thomas Neumann 0002 and
               Christoph Hornung},
  title     = {Consistency and Transactions in CAD Database},
  booktitle = {Eigth International Conference on Very Large Data Bases, September
               8-10, 1982, Mexico City, Mexico, Proceedings},
  publisher = {Morgan Kaufmann},
  year      = {1982},
  isbn      = {0-934613-14-1},
  pages     = {181-188},
  ee        = {db/conf/vldb/NeumannH82.html},
  crossref  = {DBLP:conf/vldb/82},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

A CAD database will reach a consistent state only at the end of the design process. This paper provides a framework for transforming the CAD database into the final consistent state. "or this purpose we developed a model of a design object. Each design object can be composed of several representations. Some representations are independent of any other representations and some can be derived using other representations. Seve- ral versions of each representations can be stored simultaneously in the database. Using this model we derive a set of global consistency rules. The concept of transaction is refined to suit the CAD environment. A mechanism assisting in reaching the global consistency is described. A protocol controlling the concurrent access to the representation versions is given. Finally the consistency manager observing both the consisten- cy and the concurrency protocol is outlined.

Copyright © 1982 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.

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Eigth International Conference on Very Large Data Bases, September 8-10, 1982, Mexico City, Mexico, Proceedings. Morgan Kaufmann 1982, ISBN 0-934613-14-1
Contents

References

[Eastman81]: ...
[Gray75]: ...
[Gray80]: Jim Gray: A Transaction Model. ICALP 1980: 282-298
[Gray81]: Jim Gray: The Transaction Concept: Virtues and Limitations (Invited Paper). VLDB 1981: 144-154
[Lillehagen81]: ...
[Lorie81]: ...
[Eberlein81]: ...