Using the following tables:

1) Retrieve the names of all employees in department 5 who work more than 10 hours per week on the ProductX project.

2) List name of each employee who has a dependent with the same sex as themselves.

3) Find the name of each employee who is directly supervised by Franklin Wong.

4) For each project, list the project name and the total hours per week (by all employees) spent on that project.

5) If an employee works on all the projects, retrieve the name of the employee.

6) If an employee does not work on any project, retrieve the name of the employee.

7) For each department, retrieve the department name and the average salary of all employees working in that department.

8) Retrieve the average salary of all female employees.

9) Find the name of each employee who works on at least one project located in Houston but whose department has no location in Houston.

10) List the name of each department manager who has no dependents.

11) List the name of each department manager who has no dependents. (do not use SQL operators and constructors such as NOT IN, NOT EXISTS, MINUS, COUNT)

12) For each employee, show how many employee(s) each supervises.

13) Retrieve the name of employee whose salary is greater than the average salary of all the employees in department 5.

14) Retrieve the name of employee whose salary is greater than the average salary of his or her corresponding department.

15) List the social security number of each employee who does not work on any one of projects with project number 1, 2, or 3.

16) List the social security number of each employee who works on the projects other than the projects with project number 1, 2, or 3.

17) If an employee works on both project 1 and 2, then list the employees social security number and name.

18) Retrieve the social security numbers of all direct and indirect supervisees James Borg has.

19) List the name of each department, and the total number of employees with salaries greater than $30,000, and only the department with more than one employee.

TABLE Employee

NAME SSN BDATE SEX SALARY SUPERSSN DNO

------------------- --------- --------- --- ---------- --------- --------

John B Smith 123456789 09-JAN-55 M 30000 333445555 5

Franklin T Wong 333445555 08-DEC-45 M 40000 888665555 5

Alicia J Zelaya 999887777 19-JUL-85 F 25000 987654321 4

Jennifer S Wallace 987654321 20-JUN-31 F 43000 888665555 4

Ramesh K Narayan 666884444 15-SEP-52 M 38000 333445555 5

Joyce A English 453453453 31-JUL-62 F 25000 333445555 5

Ahmad V Jabbar 987987987 29-MAR-59 M 25000 987654321 4

James E Borg 888665555 10-NOV-27 M 55000 1

TABLE Department;

DNAME DNUMBER MGRSSN MGRSTARTD

--------------- -------- --------- ---------

Research 5 333445555 22-MAY-78

Administration 4 987654321 01-JAN-85

Headquarters 1 888665555 19-JUN-71

TABLE Project

PNAME PNUMBER PLOCATION DNUM

--------------- -------- --------------- --------

ProductX 1 Bellaire 5

ProductY 2 Sugarland 5

ProductZ 3 Houston 5

Computerization 10 Stafford 4

Reorganization 20 Houston 1

Newbenefits 30 Stafford 4

TABLE Deptlocation

DNUMBER DLOCATION

-------- ---------------

1 Houston

4 Stafford

5 Bellaire

5 Houston

5 Sugarland

TABLE workson

ESSN PNO HOURS

--------- -------- ----------

123456789 1 32.5

123456789 2 7.5

666884444 3 40

453453453 1 20

453453453 2 20

333445555 2 10

333445555 3 10

333445555 10 10

333445555 20 10

999887777 30 30

999887777 10 10

ESSN PNO HOURS

--------- -------- ----------

987987987 10 35

987987987 30 5

987654321 30 20

987654321 20 15

888665555 20