DELETE FROM Employee WHERE Dept = ?Dept?
INSERT INTO Employee(Employee_ID, Dept) VALUES (?Employee_ID?, ?Dept?)
UPDATE Employee SET Dept = ?Dept? WHERE Employee_ID > 100

SELECT Name, Address FROM Employees WHERE Employee_Num =?Employee_ID? and Dept = ?Dept?

Employee_ID  

Dept   

100

Products

123

HR

130

Accounting

SELECT Name, Address FROM Employees WHERE Employee_ID = ‘100’ and DEPT = ‘Products’
SELECT Name, Address FROM Employees WHERE Employee_ID = ‘123’ and DEPT = ‘HR’
SELECT Name, Address FROM Employees WHERE Employee_ID = ‘130’ and DEPT = ‘Accounting’