Page 110 - DCAP516_COMPUTER_SECURITY

Computer Security Avinash Bhagat, Lovely Professional University

Notes Unit 9: Database Security

CONTENTS
Objectives
Introduction

9.1 Database Security Requirements
9.2 Reliability and Integrity
9.3 Sensitive Data

9.4 Multilevel Security
9.4.1 Problems in MLS
9.4.2 Applications of MLS
9.4.3 MLS Future
9.5 Summary

9.6 Keywords
9.7 Review Questions
9.8 Further Readings

Objectives

After studying this unit, you will be able to:
Analyze the database security requirements
Understand the concept of reliability and integrity in database
Discuss the concept of sensitive data interference
Learn about multilevel security and its applications

Introduction

In the last unit you have learnt about the basic concepts of database. In this unit you will study
about various aspects relating to database security such as the reliability and integrity concepts.
As you know that data is the most important resource, hence everyone is concerned with the
security and protection of their valuable information relating to database. You will study what
makes a data sensitive and how can it be protected against any vulnerabilities.

9.1 Database Security Requirements

The basic security requirements of database systems are not unlike those of other computing
systems we have studied. The basic problems like access control, exclusion of spurious data,
authentication of users, and reliability have appeared in many contexts so far.
Following is a list of requirements for database security:
Physical Database Integrity: The data of a database are immune to physical problems,
such as power failures, and someone can reconstruct the database if it is destroyed through
a catastrophe.

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