Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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To what extent do foreign keys ensure the continued validity of a
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- Certain variables for database attributes may be encrypted for security reasons. Why are encrypted characteristics not indexed by database systems?Your answer should provide a justification for why primary-key attributes cannot be encrypted in database systems.arrow_forwardThe values of a variety of relational database properties could be encrypted due to worries about data confidentiality. Is there a particular justification for not encrypting the characteristics of database management systems?How do you think the lack of encryption for primary-key properties in database systems affects those systems?arrow_forwardHow do foreign keys ensure database integrity? What proof supports your claim?arrow_forward
- Several relational database property values may be encrypted for security purposes. Exist any justifications for why database systems lack encrypted attributes?In what way do you believe the absence of encryption for primary-key characteristics in database systems presents a problem?arrow_forwardDatabase integrity is ensured through the use of foreign keys. Which pieces of evidence support your claim?arrow_forwardHow does the use of foreign keys contribute to the reliability and comprehensiveness of the information contained within a database? Have you given any consideration to the reasons behind the way in which you are behaving?arrow_forward
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