Journal ArticleDOI
Multilevel security issues in distributed database management systems II
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An architecture for a distributed database management system which operates in a limited heterogeneous environment is described and techniques for query processing and transaction management are discussed.About:Â
This article is published in Computers & Security.The article was published on 1991-12-01. It has received 28 citations till now. The article focuses on the topics: Distributed System Security Architecture & Distributed database.read more
Citations
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Patent
Independent distributed database system
TL;DR: In this article, an independent distributed database system comprising a plurality of sites was proposed, where all users at all sites work off-line with local data and all application transactions are against the local database only, and every site stores 'all and only' the data it needs.
Patent
Method and apparatus for managing digital content usage rights
TL;DR: A general model for specifying and editing rights asociated with a content (300) includes a general model that comprehends rights specification at different levels of the content life cycle.
Journal ArticleDOI
Providing Security and Interoperation of HeterogeneousSystems
TL;DR: This work presents a modeling and architectural solution to the problem of providing interoperation while preserving autonomy and security of the local sources based on the use of wrappers and a mediator and describes the architecture and operation of the system developed, and the tasks of the different components.
Journal ArticleDOI
Security constraint processing in a multilevel secure distributed database management system
Bhavani Thuraisingham,W. Ford +1 more
TL;DR: Techniques for processing security constraints in a distributed environment during query, update, and database design operations are described by this work.
Proceedings ArticleDOI
Access control in federated systems
TL;DR: This paper outlines some of the issues with respect to authorization management and specification and to access control enforcement and illustrates the basic ideas of possible authorization model for the protection of information in federated systems.
References
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Journal ArticleDOI
A relational model of data for large shared data banks
TL;DR: In this article, a model based on n-ary relations, a normal form for data base relations, and the concept of a universal data sublanguage are introduced, and certain operations on relations are discussed and applied to the problems of redundancy and consistency in the user's model.
Journal Article
A relational model of data for large shared data banks. 1970
TL;DR: A model based on n-ary relations, a normal form for data base relations, and the concept of a universal data sublanguage are introduced and certain operations on relations are discussed and applied to the problems of redundancy and consistency in the user's model.
ReportDOI
Secure Computer System: Unified Exposition and Multics Interpretation
TL;DR: A suggestive interpretation of the model in the context of Multics and a discussion of several other important topics (such as communications paths, sabotage and integrity) conclude the report.
Journal ArticleDOI
The notions of consistency and predicate locks in a database system
TL;DR: It is argued that a transaction needs to lock a logical rather than a physical subset of the database, and an implementation of predicate locks which satisfies the consistency condition is suggested.
Principles of Database Systems
TL;DR: A large part of as mentioned in this paper is a description of relations, their algebra and calculus, and query languages that have been designed using these concepts, and explanations of how the theory can be used to design good systems.
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