WGU Data Management – Foundations Exam (Data-Management-Foundations) Free Practice Test

Question 1

Which characteristic is true for non-relational databases?

A. They are ideal for databases that require an accurate record of transactions.

B. They are optimized for big data.

C. They store data in tables, columns, and rows, similar to a spreadsheet.

D. They support the SQL query language.

Correct Answer: B

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Question 2

Which relationship is shown in the following diagram?

A. Intersection data

B. Unary relationship

C. Many-to-many

D. Associative entity

Correct Answer: B

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Question 3

What is shown on the "many" side of a relationship between two tables?

A. Weak entity

B. Foreign key

C. Binary relationship

D. Reflexive relationship

Correct Answer: B

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Question 4

What is the role of a query processor in the database system architecture?

A. It uses information from the catalog to perform query optimization.

B. It writes log records before applying changes to the database.

C. It translates instructions into file system commands.

D. It sends results back to the application that requested the queries.

Correct Answer: A

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Question 5

Which function is considered an aggregate function?

A. DESC

B. TRIM

C. MAX

D. ABS

Correct Answer: C

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Question 6

Which database operation locates the needed table blocks?

A. Table scan

B. Index scan

C. Binary search

D. Fan-out

Correct Answer: B

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Question 7

Which type of join selects all the rows from both the left and right table, regardless of match?

A. Outer Join

B. Full Join

C. Inner Join

D. Cross Join

Correct Answer: B

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WGU Data Management – Foundations (Data-Management-Foundations) Free Practice Test