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The Computer Journal 1979 22(4):303-306; doi:10.1093/comjnl/22.4.303
© 1979 by British Computer Society
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Security in a multi-level structured model of a data base

E. Gudes1 *, H. S. Koch2 § and F. A. Stahl3 ¶

1 Computer Science Department, The Pennsylvania State University, University Park, USA, 2 Graduate School of Management, The University of Rochester, Rochester, USA, 3 Wellington Systems Inc., 2730 High Ridge Road, Stamford, USA

The security problem in data base systems is analysed. A multilevel structured model is proposed which allows the ‘spreading’ of protection specifications and mechanisms throughout the various levels of the data base. The model is shown to be flexible and general and subsumes several data base security models. These data base models are analysed from the security point of view and it is shown that all of these models require excessive centralisation of protection specifications, mechanisms and control. Such centralisation is not required in the proposed model which makes it more adaptable to different applications.

Received March 1978.

* Computer Science Department, The Pennsylvania State University, University Park, PA 16802, USA.

§ Graduate School of Management, The University of Rochester, Rochester,NY 14627, USA.

Wellington Systems Inc., 2730 High Ridge Road, Stamford, CT 06903, USA


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