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WGU Data Management – Foundations Sample Questions:

1. Which relationship exists between occurrences of the same entity types?

A) Cardinality
B) Modality
C) Unary
D) Binary

2. Which primary key values consist of a single field only?

A) Meaningless
B) Simple
C) Partition
D) Stable

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

A) It translates instructions into file system commands.
B) It uses information from the catalog to perform query optimization.
C) It writes log records before applying changes to the database.
D) It sends results back to the application that requested the queries.

4. What is a common error made while inserting an automatically incrementing primary key?

A) Designating multiple primary keys
B) Forgetting to specify which is the auto-increment column
C) Failing to set a numeric value in a newly inserted row
D) Inserting a value and overriding auto-increment for a primary key

5. Which operation finds an entry containing a search value by repeatedly splitting the index in two?

A) Index scan
B) Table scan
C) Binary search
D) Fan-out

Solutions: