Question: Consider the relational database of Figure. Give a relational-algebra expression for each of the following queries: a. Find the company with the most employees. b.

Consider the relational database of Figure. Give a relational-algebra expression for each of the following queries:

a. Find the company with the most employees.

b. Find the company with the smallest payroll.

c. Find those companies whose employees earn a higher salary, on average, than the average salary at First BankCorporation.

employee (person-name, street, city) works (person-name, company-name, salary) many (compan-am, city) nages

employee (person-name, street, city) works (person-name, company-name, salary) many (compan-am, city) nages (person-, ager-n)

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