Download Access Control in Data Management Systems by Elena Ferrari PDF

By Elena Ferrari

Entry regulate is among the primary prone that any info administration process may still supply. Its major aim is to guard info from unauthorized learn and write operations. this is often relatively the most important in present day open and interconnected international, the place every one form of details might be simply made on hand to an enormous consumer inhabitants, and the place a harm or misuse of information can have unpredictable effects that transcend the bounds the place info dwell or were generated. This ebook offers an outline of many of the advancements in entry keep watch over for information administration structures. Discretionary, needed, and role-based entry keep an eye on may be mentioned, by way of surveying the main correct proposals and examining the advantages and disadvantages of every paradigm in view of the necessities of other program domain names. entry keep an eye on mechanisms supplied by means of advertisement info administration platforms are awarded and mentioned. ultimately, the final a part of the e-book is dedicated to dialogue of a few of the main hard and leading edge learn developments within the region of entry keep an eye on, akin to these concerning the net 2.0 revolution or to the Database as a carrier paradigm. This ebook is a worthy reference for an heterogeneous viewers. it may be used as both a longer survey for those who have an interest in entry keep an eye on or as a reference booklet for senior undergraduate or graduate classes in info safeguard with a different specialize in entry keep an eye on. it's also necessary for technologists, researchers, managers, and builders who need to know extra approximately entry regulate and similar rising developments.

Show description

Read or Download Access Control in Data Management Systems PDF

Best cryptography books

Applied Cryptanalysis: Breaking Ciphers in the Real World

The booklet is designed to be available to encouraged IT execs who are looking to research extra concerning the particular assaults coated. specifically, each attempt has been made to maintain the chapters self sufficient, so if anyone is drawn to has functionality cryptanalysis or RSA timing assaults, they don't unavoidably have to examine all the prior fabric within the textual content.

A Course in Number Theory and Cryptography

The aim of this e-book is to introduce the reader to mathematics subject matters, either old and smooth, which have been on the heart of curiosity in purposes of quantity thought, quite in cryptography. No history in algebra or quantity idea is thought, and the ebook starts off with a dialogue of the fundamental quantity thought that's wanted.

Robust Computer Vision Theory and Applications

From the foreword by means of Thomas Huang:
"During the previous decade, researchers in desktop imaginative and prescient have came across that probabilistic computing device studying tools are super strong. This publication describes a few of these tools. as well as the utmost probability framework, Bayesian Networks, and Hidden Markov types also are used. 3 facets are under pressure: beneficial properties, similarity metric, and versions. Many attention-grabbing and demanding new effects, in accordance with learn by way of the authors and their collaborators, are presented.
Although this publication includes many new effects, it really is written in a mode that matches either specialists and newbies in machine imaginative and prescient. "

Chaos-based Cryptography Theory, Algorithms and Applications

Chaos-based cryptography, attracting many researchers some time past decade, is a examine box throughout fields, i. e. , chaos (nonlinear dynamic approach) and cryptography (computer and information security). It Chaos houses, comparable to randomness and ergodicity, were proved to be compatible for designing the ability for information safeguard.

Additional info for Access Control in Data Management Systems

Example text

4 EXTENSIONS TO THE SYSTEM R ACCESS CONTROL MODEL Because of its relevance, the System R access control model has been extended along several directions with the aim of enhancing its expressive power and adapt it to the requirements of new application scenarios and/or data models. We have already discussed the proposals for an alternative semantics of the revoke operation (cfr. 5). In what follows, we briefly survey the main additional extensions that have been proposed. Extensions to the System R access control model can be categorized along many different dimensions.

The second command revokes Marc the right to update the phone attribute of the tuples stored into the Customers relation. Finally, the third command revokes Gena the right to query relation Videos. 2. THE SYSTEM R ACCESS CONTROL MODEL 17 Since a user may receive the same authorization from different sources, the execution of a REVOKE command does not always imply that the involved user loses the revoked privileges, as the following example shows. 2 and the following REVOKE command: Leo: REVOKE select ON Videos FROM Beth, Gena; After the execution of this command, Gena is no longer allowed to query the Videos relation, whereas Beth can still query the relation due to the authorization she received from Helen.

The second command revokes Marc the right to update the phone attribute of the tuples stored into the Customers relation. Finally, the third command revokes Gena the right to query relation Videos. 2. THE SYSTEM R ACCESS CONTROL MODEL 17 Since a user may receive the same authorization from different sources, the execution of a REVOKE command does not always imply that the involved user loses the revoked privileges, as the following example shows. 2 and the following REVOKE command: Leo: REVOKE select ON Videos FROM Beth, Gena; After the execution of this command, Gena is no longer allowed to query the Videos relation, whereas Beth can still query the relation due to the authorization she received from Helen.

Download PDF sample

Rated 4.33 of 5 – based on 19 votes