Data-Management-Foundations Free Exam Questions & Answers (Updated 2026)

What is the role of the database administrator?

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The database administrator is responsible for securing the database system against unauthorized users.

The database administrator determines the format of each data element and the overall database structure.

What is the role of the transaction manager within the database system architecture?

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The transaction manager uses information from the catalog to perform query optimization.

The transaction manager is composed of a query processor, storage manager, transaction manager, log, and catalog.

The transaction manager logs insert, update, and delete queries, and the result is sent back to the application.

The transaction manager translates the query processor instructions into filesystem commands and uses an index to quickly locate the requested data.

Which product has an open - source license in addition to having a non - relational system?

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Which description defines a data type?

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What does the aggregate function do?

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WGU Data-Management-Foundations Free Exam Questions (Updated 2026)