Question: Explain how you solved the problem, what strategies you used and show all the details of your work / solution! 1. a) Discuss the entity

Explain how you solved the problem, what strategies you used and show all the details of your work / solution!

1. a) Discuss the entity integrity and referential integrity constraints. Why is each considered important?

b) Discuss how SQL implements the entity integrity and referential integrity constraints as well as how it implements the referential triggered actions.

c) Discuss how NULLs are treated in comparison operators in SQL. How are NULLs treated when aggregate functions are applied in an SQL query? How are NULLs treated if they exist in grouping attributes?

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