Database Tables - Person(PName, Street, City, CName, Salary) - Company(CName, City, Sales) - Branch(CName, City) Write Relational Algebra expressions to receive the result for the following queries and Tuple Relational Calculus queries for the below to retrieve the result to first three queries. Retrieve the names of companies headquartered in Redmond which have at least two branches in two different cities. Database Tables - Person(PName, Street, City, CName, Salary) - Company(CName, City, Sales) - Branch(CName, City) Write Relational Algebra expressions to receive the result for the following queries and Tuple Relational Calculus queries for the below to retrieve the result to first three queries. Retrieve the names of companies headquartered in Redmond which have at least two branches in two different cities