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2.7 Consider the relational database of Figure 2.14. Give an expression in the relational algebra to express each of the following queries: a. Find the

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2.7 Consider the relational database of Figure 2.14. Give an expression in the relational algebra to express each of the following queries: a. Find the names of all employees who live in city "Miami". b. Find the names of all employees whose salary is greater than $100,000. c. Find the names of all employees who live in "Miami" and whose salary is greater than $100,000

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