Consider a query that requests all instructors in the, Basic Computer Science

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Consider a query that requests all instructors in the

Consider the instructor relation shown in Figure 11.1.

a. Construct a bitmap index on the attribute salary, dividing salary values into 4 ranges: below 50000, 50000 to below 60000, 60000 to below 70000, and 70000 and above.

b. Consider a query that requests all instructors in the Finance department with salary of 80000 or more. Outline the steps in answering the query, and show the final and intermediate bitmaps constructed to answer the query

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