Download e-book for kindle: Access Control in Data Management Systems by Elena Ferrari

By Elena Ferrari

ISBN-10: 1608453758

ISBN-13: 9781608453757

Entry keep watch over is likely one of the basic prone that any information administration method may still offer. Its major objective is to guard facts from unauthorized learn and write operations. this can be relatively the most important in ultra-modern open and interconnected international, the place every one type of info might be simply made on hand to an important consumer inhabitants, and the place a harm or misuse of knowledge could have unpredictable outcomes that transcend the limits the place info stay or were generated. This publication offers an outline of a few of the advancements in entry keep watch over for information administration platforms. Discretionary, needed, and role-based entry regulate can be mentioned, through surveying the main proper proposals and examining the advantages and downsides of every paradigm in view of the necessities of other software domain names. entry regulate mechanisms supplied by means of advertisement information administration platforms are offered and mentioned. ultimately, the final a part of the ebook is dedicated to dialogue of a few of the main tough and cutting edge examine traits within the quarter of entry regulate, reminiscent of these relating to the net 2.0 revolution or to the Database as a carrier paradigm. This ebook is a priceless reference for an heterogeneous viewers. it may be used as both a longer survey for those who have an interest in entry regulate or as a reference ebook for senior undergraduate or graduate classes in facts protection with a different specialise in entry keep watch over. it's also helpful for technologists, researchers, managers, and builders who need to know extra approximately entry keep watch over and comparable rising tendencies.

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Further extensions to the Orion access control model have been proposed by Bertino and Weigand [1994], such as, the definition of new authorization types and the revisiting of some propagation rules. The model has been further extended by Bertino et al. [2000b] along different directions: the support for both roles and groups with a clear functional distinction between them, the possibility of granting authorizations to single user and not only to roles; the support for user-defined derivation rules to derive implicit authorizations not only along the role, object, and privilege hierarchies, like in the Orion access control model.

These data models are semantically richer than the relational one, and therefore their protection requires an extension to the models proposed for relational data. 1 ACCESS CONTROL FOR OBJECT DMSS Access control models developed for relational DMSs should be redesigned when dealing with object-oriented and, recently, object-relational DMSs (in what follows, we will refer to both kind of systems as object data management systems—ODMSs for short) because of the deep differences in the underlying data model.

3. DAC SUPPORT IN SQL 25 command. If the timestamp is greater than 47, the view is not deleted, since Beth received at time 47 the select privilege on Videos by Helen. In contrast, if the CREATE VIEW command has been executed by Beth before time 47, the view is recursively deleted. 3 DAC SUPPORT IN SQL The commands to enforce discretionary access control provided by the SQL standard3 are mainly based on the System R access control model. The standard provides two basic commands, namely GRANT and REVOKE, with the same purpose as the analogous commands in the System R access control model.

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Access Control in Data Management Systems by Elena Ferrari

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