D426 EXAM: WGU DATA MANAGEMENT-FOUNDATIONS D426, 2025/2026 WITH CORRECT/ACCURATE ANSWERS

D426 EXAM: WGU DATA
MANAGEMENT-FOUNDATIONS D426,
2025/2026 WITH CORRECT/ACCURATE
ANSWERS


Which requirement within large, complex databases ensures
users have limited access to the database?

Recovery
Performance
Authorization
Confidentiality

Authorization

Which property is enforced by a primary key field?

Not Null
Null
Duplicate
Numeric

Not Null

Which property or function allows SQL to insert a field value?

Composite
Simple
Auto-increment
Numeric

Auto-increment

,Which property specifies an expression on one or more columns
of a table?

CHECK
RESTRICT
CASCADE
UNIQUE

CHECK

Which type of key is a single column in a table used to identify a
row?

Super key
Simple primary key
Foreign key
Composite primary key

Simple primary key

Which type of key is often represented by parentheses to show
multiple columns?

Composite
Simple
Unique
Foreign

Composite

Which primary key characteristic means it includes information
that is easy to type and store?

Non-null
Meaningless
Stable
Simple

, Simple

Which part of a junction table in a relational database establishes
a many-to-many relationship between two tables?

Primary key
Foreign key
Composite key
Candidate key

Foreign key

Which type of relationship is established by a foreign key in a
relational database?

Aggregation
Composition
One-to-many
Many-to-many

One-to-many

Which statements may be rejected when a foreign key constraint
is specified?

INSERT
CHECK
SELECT
ORDER BY

INSERT

Which key describes the unique columns in a table that do not
contain a primary key?

Foreign key
Simple key