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Providing Dynamic Security Control in a Federated Database.

Norbik Bashah Idris, W. A. Gray, R. F. Churchhouse: Providing Dynamic Security Control in a Federated Database. VLDB 1994: 13-23
@inproceedings{DBLP:conf/vldb/IdrisGC94,
  author    = {Norbik Bashah Idris and
               W. A. Gray and
               R. F. Churchhouse},
  editor    = {Jorge B. Bocca and
               Matthias Jarke and
               Carlo Zaniolo},
  title     = {Providing Dynamic Security Control in a Federated Database},
  booktitle = {VLDB'94, Proceedings of 20th International Conference on Very
               Large Data Bases, September 12-15, 1994, Santiago de Chile, Chile},
  publisher = {Morgan Kaufmann},
  year      = {1994},
  isbn      = {1-55860-153-8},
  pages     = {13-23},
  ee        = {http://www.vldb.org/conf/1994/P013.PDF},
  crossref  = {DBLP:conf/vldb/94},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

When data is being used in a federated database, the aim is to give a loose coupling of the data in the component databases so that a very dynamic and therefore flexible pattern of data sharing can be established. When security integration is performed this flexibility is curtailed by the resultant security level established at integration time which by default is the least upper bound between candidate security levels. Such overclassification of data implies that there will be authorised users who are debarred at the federation level to access the data. To circumvent this problem there is a need for a dynamic mandate type control for definite periods of the federated system's existence. An approach to establishing such temporary dynamic security control is described in this paper. It is an adaptation of Shamir's method [Shamir79] for sharing a secret, and it aims to let users who are debarred at the default security level from access to particular data, gain access to this data under local control if an appropriate combination of current database administrator of the system are prepared to grant the access dynamically.

Copyright © 1994 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.


Printed Edition

Jorge B. Bocca, Matthias Jarke, Carlo Zaniolo (Eds.): VLDB'94, Proceedings of 20th International Conference on Very Large Data Bases, September 12-15, 1994, Santiago de Chile, Chile. Morgan Kaufmann 1994, ISBN 1-55860-153-8
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