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Question 1

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

Options :

A : Theft

B : Privacy

C : Availability

D : Confidentiality

Answer: C

Question 2

Consider the Information Engineering diagram in the exhibit showing a conceptual data model of the relations BUILDING and RESIDENT. What is the next step in refining the data model?

Options :

A : Create intermediate entities

B : Create a logical data model.

C : Resolve many-to-many relationships

D : Identify and resolve complex relationships.

Answer: B

Question 3

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

Question 4

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 5

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