Question 1

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 2

Which statement is used to define a named group of related tables, views, domains and other database objects?

Options :

A : CREATE

B : CREATE TABLE

C : CREATE DOMAIN

D : CREATE SCHEMA

Answer: D

Question 3

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 4

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

Question 5

Which of the following best describes a composite key?

Options :

A : A composite key is a primary key that consists of the first two attributes of a relation

B : A composite key is a primary or foreign key defined by its parent keys.

C : A composite key is a foreign key that consists of the same attributes as the primary key from a related table.

D : A composite key is a primary or foreign key that consists of two or more attributes of a relation

Answer: D