Answer the following views in SQL

a. A view that has the department name, manager name, and manager salary for every department

b. A view that has the employee name, supervisor name, and employee salary for each employee who works in the Research department

c. A view that has the project name, controlling department name, number of employees, and total hours worked per week on the project for each project

EMPLOYEE \begin{tabular}{|l|l|l|l|l|l|l|l|l|l|} \hline Fname & Minit & Lname & Ssn & Bdate & Address & Sex & Salary & Super_ssn & Dno \\ \hline \end{tabular} DEPARTMENT \begin{tabular}{|l|l|l|l|} \hline Dname & Dnumber & Mgr_ssn & Mgr_start_date \\ \hline \end{tabular} DEPT_LOCATIONS \begin{tabular}{|l|l|} \hline Dnumber & Dlocation \\ \hline \end{tabular} PROJECT \begin{tabular}{|l|l|l|l|} \hline Pname & Pnumber & Plocation & Dnum \\ \hline \end{tabular} WORKS_ON \begin{tabular}{|l|l|l|} \hline Essn & Pno & Hours \\ \hline \end{tabular} DEPENDENT \begin{tabular}{|l|l|l|l|l|} \hline Essn & Dependent_name & Sex & Bdate & Relationship \\ \hline \end{tabular}