Which factors would you consider in deciding whether to, Basic Computer Science

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Which factors would you consider in deciding whether to

Consider the following relation:

There is a clustered index on eid and an unclustered index on age.

1. Which factors would you consider in deciding whether to make an index on a relation a clustered index? Would you always create at least one clustered index on every relation?

2. How would you use the indexes to enforce the constraint that eid is a key?

3. Give an example of an update that is definitely speeded up because of the available indexes. (English description is sufficient.)

4. Give an example of an update that is definitely slowed down because of the indexes. (English description is sufficient.)

5. Can you give an example of an update that is neither speeded up nor slowed down by the indexes?

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