,1. Multiple Choice: What is the primary benefit of using a database
management system (DBMS) over flat-file systems?
a) Increased data redundancy
b) Enhanced data integrity and security
c) Reduced data independence
d) Simplified data complexity
Answer: b) Enhanced data integrity and security
Rationale: A DBMS provides a centralized control which ensures
that the data is accurate and secure. It also supports data integrity
constraints to maintain the quality of the data.
2. Fill-in-the-Blank: The process of ensuring that the data entered
into a database is both correct and consistent is known as
___________.
Answer: Data Validation
Rationale: Data validation is a critical step in data management
that prevents incorrect or inconsistent data from being stored in the
database.
3. True/False: A relational database uses a structured query
language (SQL) for database management.
, Answer: True
Rationale: SQL is the standard language used for managing and
manipulating relational databases.
4. Multiple Response: Which of the following are characteristics of
Big Data? (Select all that apply)
a) Volume
b) Velocity
c) Variety
d) Veracity
e) Value
Answers: a) Volume, b) Velocity, c) Variety, d) Veracity, e)
Value
Rationale: The five Vs of Big Data characterize its complexity:
Volume refers to the amount of data, Velocity to the speed of data
processing, Variety to the different types of data, Veracity to the
quality of the data, and Value to the actionable insights gained from
the data.
5. Multiple Choice: In a database, ACID properties are important
for which of the following?
a) Data analysis
b) Data transactions
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