Security in a multi-level structured model of a data base
Ehud Gudes · The Computer Journal · 1979
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.