Mark works as a Database Administrator for DataOneWorld Inc. Management instructs him to provide an
additional security layer to the database to prevent unauthorized viewing of data with the help of an algorithm
called cipher. Which of the following will help himto accomplish the task?

A.
Native auditing

B.
Authentication

C.
Encryption

D.
Abstraction

Explanation:
Encryption provides an additional security layer, protecting the data from unauthorized viewing with the help of
an algorithm called cipher. Even if access to the database is obtained, it will not be easy to decipher encrypted
data into a readable form.
Answer B is incorrect. Authentication is the process of verifying the identity of a user or software connecting to
a database. During the process of authentication, the user must submit sufficient information validated either
by the database itself, or by the operating system within which the database is installed.
Answer D is incorrect. Abstraction is a method of coding that enables a user to focus on the coding rather than
the syntax for a specific database API. A user can use generic methods to access a database. In order to
perform database abstraction, a user requires additional code or libraries. The benefit of database abstraction
is that it provides a uniform interface for database access.
Answer A is incorrect. Native auditing is the process of extracting trails on a regular basis so that they can be
transferred to a designated security system where the database administrators do not have access. This
ensures a certain level of segregation of duties and provides evidence that the native audit trails were not
modified by authenticated administrators.