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WGU C175/D426 DATA MANAGEMENT FOUNDATIONS
OA EXAM NEWEST 2026/2027 ACTUAL EXAM 2 LATEST
VERSIONS 300 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (100% CORRECT AND
VERIFIED ANSWERS)|ALREADY GRADED A+
Question 1
What is the primary purpose of a database management system
(DBMS)?
A. Create hardware components
B. Manage and organize data efficiently
C. Replace operating systems
D. Design computer networks
Answer: B. Manage and organize data efficiently
Rationale: A DBMS stores, retrieves, and manages data.
Question 2
Which database model organizes data into tables with rows and
columns?
A. Hierarchical model
B. Network model
C. Relational model
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D. Object model
Answer: C. Relational model
Rationale: Relational databases use tables.
Question 3
What is a primary key?
A. A duplicate field
B. A field that uniquely identifies each record
C. A password field
D. A temporary value
Answer: B. A field that uniquely identifies each record
Rationale: Primary keys uniquely identify records.
Question 4
Which SQL statement is used to retrieve data from a database?
A. INSERT
B. UPDATE
C. DELETE
D. SELECT
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Answer: D. SELECT
Rationale: SELECT retrieves data.
Question 5
What does SQL stand for?
A. Structured Query Language
B. Sequential Query Logic
C. Standard Question Language
D. System Query Link
Answer: A. Structured Query Language
Rationale: SQL is the standard database query language.
Question 6
Which normal form eliminates repeating groups in a table?
A. First Normal Form (1NF)
B. Second Normal Form (2NF)
C. Third Normal Form (3NF)
D. Boyce-Codd Normal Form
Answer: A. First Normal Form (1NF)
Rationale: 1NF removes repeating groups.
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Question 7
What is a foreign key?
A. A duplicate record
B. A key linking one table to another
C. A backup file
D. A password protection feature
Answer: B. A key linking one table to another
Rationale: Foreign keys create relationships between tables.
Question 8
Which SQL command adds new records into a table?
A. SELECT
B. UPDATE
C. INSERT
D. DROP
Answer: C. INSERT
Rationale: INSERT adds records.
Question 9
pg. 4
WGU C175/D426 DATA MANAGEMENT FOUNDATIONS
OA EXAM NEWEST 2026/2027 ACTUAL EXAM 2 LATEST
VERSIONS 300 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (100% CORRECT AND
VERIFIED ANSWERS)|ALREADY GRADED A+
Question 1
What is the primary purpose of a database management system
(DBMS)?
A. Create hardware components
B. Manage and organize data efficiently
C. Replace operating systems
D. Design computer networks
Answer: B. Manage and organize data efficiently
Rationale: A DBMS stores, retrieves, and manages data.
Question 2
Which database model organizes data into tables with rows and
columns?
A. Hierarchical model
B. Network model
C. Relational model
pg. 1
,2|Page
D. Object model
Answer: C. Relational model
Rationale: Relational databases use tables.
Question 3
What is a primary key?
A. A duplicate field
B. A field that uniquely identifies each record
C. A password field
D. A temporary value
Answer: B. A field that uniquely identifies each record
Rationale: Primary keys uniquely identify records.
Question 4
Which SQL statement is used to retrieve data from a database?
A. INSERT
B. UPDATE
C. DELETE
D. SELECT
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,3|Page
Answer: D. SELECT
Rationale: SELECT retrieves data.
Question 5
What does SQL stand for?
A. Structured Query Language
B. Sequential Query Logic
C. Standard Question Language
D. System Query Link
Answer: A. Structured Query Language
Rationale: SQL is the standard database query language.
Question 6
Which normal form eliminates repeating groups in a table?
A. First Normal Form (1NF)
B. Second Normal Form (2NF)
C. Third Normal Form (3NF)
D. Boyce-Codd Normal Form
Answer: A. First Normal Form (1NF)
Rationale: 1NF removes repeating groups.
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Question 7
What is a foreign key?
A. A duplicate record
B. A key linking one table to another
C. A backup file
D. A password protection feature
Answer: B. A key linking one table to another
Rationale: Foreign keys create relationships between tables.
Question 8
Which SQL command adds new records into a table?
A. SELECT
B. UPDATE
C. INSERT
D. DROP
Answer: C. INSERT
Rationale: INSERT adds records.
Question 9
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