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Consider the following relation Teacher (tech_id: integer, sal: integer, age: real, did: integer) There is a clustered index one id and an unclustered index on age. 1. How would you use the indexes to enforce the constraint that tech_id is a key? 2. Write a query of an update that is definitely speeded up because of the available indexes 3. Give an example of an update that is definitely slowed down because of the indexes 4. Can you give an example of an update that is neither speeded up nor slowed down by the indexes?

Consider the following relation Teacher (tech_id: integer, sal: integer, age: real, did: integer) There is a clustered index one id and an unclustered index on age. 1. How would you use the indexes to enforce the constraint that tech_id is a key? 2. Write a query of an update that is definitely speeded up because of the available indexes 3. Give an example of an update that is definitely slowed down because of the indexes 4. Can you give an example of an update that is neither speeded up nor slowed down by the indexes?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider the following relation
Teacher (tech_id: integer, sal: integer, age: real, did: integer)
There is a clustered index one id and an unclustered index on age.
1. How would you use the indexes to enforce the constraint that tech_id is a key?
2. Write a query of an update that is definitely speeded up because of the available indexes
3. Give an example of an update that is definitely slowed down because of the indexes
4. Can you give an example of an update that is neither speeded up nor slowed down by the indexes?

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