Question: Question 1 : a-What is a database index? Why would you need one? b- What does it mean for a transaction to be ACID? Define

Question 1 :

a-What is a database index? Why would you need one?

b- What does it mean for a transaction to be ACID? Define and describe each of the letters in ACID.

c- What are the criteria of each of the three normal forms as presented in the textbook?

d- Explain what a recursive relationship is

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