Question 1

Consider the following relational algebraic expression as well as the Employee and Department relations shown in the exhibit: Which of the following relations would result from the given relational algebraic expression?

Options :

A :

B :

C :

D :

Answer: D

Question 2

Consider the following database information:

domain s_id: integer domain grd: fixed length

character string length 1

STUDENT_GRADE(

Student_Number: s_id NOT NULL -

Grade: grd ) Primary Key -

Student_Number -

During which phase of the database design process would this information be developed?

Options :

A : Logical

B : Physical

C : Conceptual

D : Implementation

Answer: A

Question 3

Consider the entity-relationship (ER) diagram shown in the exhibit. Which type of relationship between the two entities is shown?

Options :

A : m:m

B : m:n

C : 1:1

D : 1:n

Answer: B

Question 4

Consider the Orders relation shown in the exhibit. Which of the following SQL statements would replace the value in the Sales_Rep_No column with 110 everywhere that Sales_Rep_No 108 is listed?

Options :

A : UPDATE Sales_Rep_No IN Orders SET(Sales_Rep_No = 110 WHERE Sales_Rep_No = 108);

B : UPDATE Orders SET Sales_Rep_No = 110 WHERE Sales_Rep_No = 108;

C : UPDATE Orders SET Sales_Rep_No = 110;

D : UPDATE Orders WHERE Sales_Rep_No = 108 SET Sales_Rep_No = 110;

Answer: B

Question 5

Consider the relation shown in the exhibit. Which of the following SQL statements would properly add information for a new employee?

Options :

A : INSERT INTO Employee VALUES(0005, Tim, Bogart, 03-15-77);

B : INSERT INTO Employee(Emp_ID, First_Name, Last_Name, Birth_Date) VALUES(0004, Tim, Bogart, 03-15-77);

C : INSERT INTO Employee(Emp_ID, First_Name, Last_Name, Birth_Date) VALUES(0005, Tim, Bogart, 03-05-77);

D : INSERT INTO Employee(Emp_ID, First_Name, Last_Name, Birth_Date) VALUES(0005, Tim, Bogart, 03-05-77);

Answer: D