Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- You are tasked with setting up protection within a new project, and you are trying to decide on a formal security model to protect the resources (e.g., files). The two options are to implement an access matrix using the following:
- Access lists that are associated with objects.
- Capabilities that are associated with domains.
Compare the strengths and weaknesses of each type of implementation
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Step 1
Introduction
Access Matrix: An example of a security model for a computer system's protective state is Access Matrix. A matrix is used to depict it. The permissions of each process running in the realm with regard to each object are specified using an access matrix. The columns of a matrix represent objects, whereas the rows represent domains. Each entry (i, j) describes the collection of actions that a process operating in domains Di can call on object Oj, and each cell of the matrix represents a set of access permissions that are granted to the process of the domain.
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- When implementing the Comparable interface, what are the best practices for handling objects with multiple attributes that contribute to their natural order?arrow_forwardDifferences between class and object adapters? Can both concepts be justified?arrow_forwardYou should focus your efforts on avoiding a debate about how well deep access performs in comparison to shallow access, and you should make the case for using deep access rather than shallow access from the perspective of a developer.arrow_forward
- Design and implement a java program for the above class diagram. Here, you haveto calculate the compound interest for saving accounts (3.2% per year). As youknow, the user should not be able to withdraw money from a savings account but canwithdraw from the current account. The user should maintain a threshold in the currentaccount. If it goes below, the bank will charge some penalty. The tasks area. User can deposit, update, display the balance from both accounts (Savingsand current)b. Calculate interest and sum to savings accountc. Allow to withdraw only in current and goes below some level, charge apenaltyarrow_forwardIn java programming (object-oriented programming in general) Why is it important to invest additional work and additional code to prevent highly coupled classes? Give three basic reasonsarrow_forwardBoth class adapters and object adapters come with their own individual set of benefits and drawbacks. Furthermore, why are these principles so essential?arrow_forward
- You'll find out what dynamic scoping is, when and why it's used, the performance implications of using it, and some strategies for mitigating those effects in this article.arrow_forwardWhile we discussed the steps to define an interface for a class, we mentioned that that a class interface typically contains only methods and publicly accessible data fields generally cause problems. 1. Explain why this practice causes problems? 2. Explain two reasons for your statement.arrow_forward
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