Answer 1b and c(all the questions). Thank you

(b) Express the division operation as a sequence of few basic relational algebra operations, and verify with arn example if the sequence of basic operations do the same job as divisio (c) Consider the following relational database: EMPLOYEE(e-name, street, city) COMPANY (c-name, city) 1. (a) What is an alternate key? WORKS FOR(e-name, c-name, salary) MANAGED BY (e-name, m-name) For each of the following queries, give an expression using: relational algebra, tuple relational calculus, domain relational calculus, and SQL i. Find the names of all employees who live in the same city as the company for which they work ii. Find the names of all employees who live in th e same city and on the same street as do their managers. ii. Find the names of all employees who do not work for 'State Bank of India'. Assume that no person can work for more than one companies io. Find the name of all employees who earn more than every employee of 'State Bank of India'. Assume that all people work for at most one company . Assume the companies may be located in several cities. Find all companies located in every city in which State Bank of India' is also located. 2+(1.5+1.5) + 5 x (0.5 x 4))