1. Specify the following queries on the database schema shown in Figure 3.6 using both the tuple relational calculus and the domain relational calculus. You don't need to show the result of each query if applied to the database of Figure 3.6. (a) Retrieve the names of employees in department 5 who work more than 10 hours per week on the 'ProductX' project (b) List the names of employees who have a dependent with the same first name as themselves (c) Find the names of employees that are directly supervised by 'Franklin Wong'. (e) Retrieve the names of employees who work on every project