Consider the following relations and answer questions 1-6 using SQL. 2 points for each question.

Emp (eno, ename, title, city)

Proj (pno, pname, budget, city)

Works (eno, pno, responsibility, duration)

Pay (title, salary)

1. Find the enames of employees who work on the project named Installation.

2. Find the employees number whose salaries are above the average salary.

3. For each city, how many projects are located in that city and what is the total budget over all projects in the city?

4. Find the names of projects whose budgets are greater than the budgets of any projects located in Boca Raton.

5. Find employees enames who work on all the projects.

6. Find projects names for any project if there are more than 2 people sharing the same responsibility.