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Question 5: Celina works as a Database Administrator for Tech Mart Inc. The company uses an Oracle
database. The database contains a table named Employees. Following is the structure of the table:
EmpID NUMBER (5) PRIMARY KEY
EmpName VARCHAR2 (35) NOT NULL
Salary NUMBER (9, 2) NOT NULL
Commission NUMBER (4, 2)
ManagerName VARCHAR2 (25)
ManagerID NUMBER (5)
Celina wants to display the names of employees and their managers, using a self join. Which of the
following SQL statements will she use to accomplish this?
Each correct answer represents a complete solution. Choose two.
A. SELECT e.EmpName, m.ManagerName FROM Employees e, Employeesm WHERE e.EmpID =
m.ManagerID;
B. SELECT e.EmpName, m.ManagerName FROM Employees e INNER JOIN Employeesm ON e.EmpID
= m.ManagerID;
C. SELECT e.EmpName, m.ManagerName FROM Employees e LEFT OUTER JOIN Employees m ON
e.EmpID = m.ManagerID;
D. SELECT e.EmpName, m.ManagerName FROM Employees e SELF JOIN Employeesm ON e.EmpID =
m.ManagerID;
Correct Answer: A,B