Question 1

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 2

Consider the entity-relationship (ER) diagram shown in the exhibit. What do the characters at the ends of the connecting line indicate?

Options :

A : Degree of a relation

B : Cardinality of a relation

C : Primary key of a relation

D : Determinant of a relation

Answer: B

Question 3

Which area of database security involves maintaining access to enterprise data?

Options :

A : Theft

B : Privacy

C : Availability

D : Confidentiality

Answer: C

Question 4

What improvement can be made to file-based databases to overcome their limitations?

Options :

A : Implement a tabular structure.

B : Gather files in a distributed repository

C : Use a hierarchical database file system.

D : Tightly couple database structure to database application programs.

Answer: A

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

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