6.2. Security Requirements
The basic security requirements of database systems are not unlike those of other computing systems we have studied. The basic problems—access control, exclusion of spurious data, authentication of users, and reliability—have appeared in many contexts so far in this book. 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.
Logical database integrity. The structure of the database is preserved. With logical integrity of a database, a modification to the value of one field does not affect other fields, for example.
Element ...
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