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For Exercises 1723, using the relation tables given before Exercise 7, express each
Chapter 5, Problem 18(choose chapter or problem)
For Exercises 17-23, using the relation tables given before Exercise 7, express each query in relational algebra, SQL, and relational calculus forms. Also give the result of each query.
18. Give the titles of all books published by Harding
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QUESTION:
For Exercises 17-23, using the relation tables given before Exercise 7, express each query in relational algebra, SQL, and relational calculus forms. Also give the result of each query.
18. Give the titles of all books published by Harding
ANSWER:Step 1 of 4
Relations are the most common way of storing structured data. There are tuples and attributes in the relation. Project, Restrict, Join are the most common operations on relations. The Restrict operation is used on tuples. The Project operation is used on attributes. The Join operation can be performed on two relations with a common attribute.
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