WGU D426 PRE -ASSESSMENT EXAM LATEST 2026
ACTUAL EXAM| D426 DATA MANAGEMENT -
FOUNDATIONS EXAM REVIEW WITH 100 REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS/
ALREADY GRADED A+
1. Which requirement within large, complex databases ensures
users have limited access to the database?
A. Recovery
B. Performance
C. Authorization
D. Confidentiality
Correct Answer: C
Rationale: Authorization is the database requirement that ensures
users have limited access to specific tables, columns, or rows of a
database. Database systems authorize individual users to access
specific data. Recovery ensures data can be restored after
1
,failures, performance deals with response times, and
confidentiality is a broader security principle .
2. Which design type specifies database requirements without
regard to a specific database system?
A. Physical design
B. Conceptual design
C. Logical design
D. Abstract design
Correct Answer: B
Rationale: Conceptual design (also called the analysis phase)
specifies database requirements without regard to a specific
database system. Requirements are represented as entities,
relationships, and attributes depicted in ER diagrams. Logical
design implements requirements in a specific database system,
and physical design adds indexes and storage specifications .
2
,3. What characterizes the rules of relational databases?
A. They are logical constraints that ensure the data is valid
B. They are based on business policy and specific databases
C. They represent data volumes and rapidly changing data
structures
D. They embody the theoretical foundation of the SQL language
Correct Answer: A
Rationale: Relational rules (also called integrity rules) are logical
constraints that ensure data is valid and conforms to business
policy. These rules govern the data in relational databases,
ensuring that data is consistent and accurate. They form the
logical foundation that makes relational databases reliable .
4. Which event will result in an error code and error description
when using MySQL Server?
A. When the server or updates are incorrectly installed
B. When an SQL statement is entered to locate errors in the
3
, database
C. When an SQL statement is syntactically incorrect
D. When a Mac OS shortcut code is used on a Windows OS
Correct Answer: C
Rationale: MySQL Server returns an error code and description
when an SQL statement is syntactically incorrect or the database
cannot execute the statement. This is how the database system
communicates issues with SQL syntax or execution to the user .
5. Which data type should be used to store whole integer values,
such as age?
A. NUM
B. VARCHAR
C. INT
D. DATE
Correct Answer: C
Rationale: INT (or INTEGER) is the data type used to store whole
4
ACTUAL EXAM| D426 DATA MANAGEMENT -
FOUNDATIONS EXAM REVIEW WITH 100 REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS/
ALREADY GRADED A+
1. Which requirement within large, complex databases ensures
users have limited access to the database?
A. Recovery
B. Performance
C. Authorization
D. Confidentiality
Correct Answer: C
Rationale: Authorization is the database requirement that ensures
users have limited access to specific tables, columns, or rows of a
database. Database systems authorize individual users to access
specific data. Recovery ensures data can be restored after
1
,failures, performance deals with response times, and
confidentiality is a broader security principle .
2. Which design type specifies database requirements without
regard to a specific database system?
A. Physical design
B. Conceptual design
C. Logical design
D. Abstract design
Correct Answer: B
Rationale: Conceptual design (also called the analysis phase)
specifies database requirements without regard to a specific
database system. Requirements are represented as entities,
relationships, and attributes depicted in ER diagrams. Logical
design implements requirements in a specific database system,
and physical design adds indexes and storage specifications .
2
,3. What characterizes the rules of relational databases?
A. They are logical constraints that ensure the data is valid
B. They are based on business policy and specific databases
C. They represent data volumes and rapidly changing data
structures
D. They embody the theoretical foundation of the SQL language
Correct Answer: A
Rationale: Relational rules (also called integrity rules) are logical
constraints that ensure data is valid and conforms to business
policy. These rules govern the data in relational databases,
ensuring that data is consistent and accurate. They form the
logical foundation that makes relational databases reliable .
4. Which event will result in an error code and error description
when using MySQL Server?
A. When the server or updates are incorrectly installed
B. When an SQL statement is entered to locate errors in the
3
, database
C. When an SQL statement is syntactically incorrect
D. When a Mac OS shortcut code is used on a Windows OS
Correct Answer: C
Rationale: MySQL Server returns an error code and description
when an SQL statement is syntactically incorrect or the database
cannot execute the statement. This is how the database system
communicates issues with SQL syntax or execution to the user .
5. Which data type should be used to store whole integer values,
such as age?
A. NUM
B. VARCHAR
C. INT
D. DATE
Correct Answer: C
Rationale: INT (or INTEGER) is the data type used to store whole
4
