WGU C175-D426 DATA MANAGEMENT FOUNDATIONS OA EXAM – QUESTIONS AND ANSWERS | VERIFIED AND
WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains
Data Governance and Management Concepts
Database Design and Data Modeling
SQL and Query Languages
Data Warehousing and Business Intelligence
Data Security, Privacy, and Ethics
Data Integration and Interoperability
Introduction
This comprehensive assessment is designed to evaluate a candidate's foundational knowledge and practical skills in
data management, as prescribed by the WGU C175-D426 exam. The examination covers the core principles of data
governance, database design, SQL, data warehousing, and security, extending into professional application and ethical
decision-making. It is structured around multiple-choice and scenario-based questions that require both recall of
essential facts and the application of knowledge to realistic business problems. Successful completion of this exam
demonstrates competency in using data management tools and methodologies to support organizational goals, ensure
data integrity, and navigate complex professional standards.
Question 1
Which of the following best describes the primary goal of data governance?
A. To ensure data is stored in the most cost-effective manner possible.
B. To establish a framework for managing data availability, usability, integrity, and security.
C. To maximize the speed of data retrieval for all users.
,D. To enable the free exchange of data between different departments without restrictions.
🟢 Correct Answer: B. To establish a framework for managing data availability, usability, integrity, and security.
🔴 Explanation: Data governance is the overarching process of managing the availability, usability, integrity, and
security of data in an enterprise. While cost, speed, and sharing are factors, the primary goal is to create a
comprehensive framework.
Question 2
In the context of the ACID properties, which property ensures that a transaction is treated as a single, indivisible unit,
where either all operations are executed or none are?
A. Consistency
B. Isolation
C. Durability
D. Atomicity
🟢 Correct Answer: D. Atomicity
🔴 Explanation: Atomicity is the property that guarantees that a transaction is an indivisible unit of work. If any part
of the transaction fails, the entire transaction is rolled back, leaving the data unchanged.
Question 3
A database administrator is designing a new system for a university. The system must record that each student can
be enrolled in many courses, and each course can have many students. What type of relationship is this?
A. One-to-One
B. One-to-Many
C. Many-to-One
D. Many-to-Many
🟢 Correct Answer: D. Many-to-Many
🔴 Explanation: This is a classic many-to-many relationship, which is typically resolved in a relational database by
creating a junction (or associative) table.
,Question 4
Which SQL statement is used to change the structure of an existing table, such as adding or deleting a column?
A. UPDATE
B. ALTER TABLE
C. MODIFY TABLE
D. CHANGE TABLE
🟢 Correct Answer: B. ALTER TABLE
🔴 Explanation: ALTER TABLE is the Data Definition Language (DDL) command used to modify the structure of an
existing database table. UPDATE is for modifying data within rows.
Question 5
What is the primary purpose of a data warehouse?
A. To serve as the primary operational database for daily transactions.
B. To provide a centralized repository for historical and aggregated data for analysis and reporting.
C. To back up data from multiple operational systems.
D. To manage the flow of data between different applications.
🟢 Correct Answer: B. To provide a centralized repository for historical and aggregated data for analysis and
reporting.
🔴 Explanation: Data warehouses are specifically designed for analytical processing and reporting, holding large
volumes of historical data from multiple sources.
Question 6
An organization is planning to implement a new data management system. What is the first and most critical step in
this process?
A. Purchase the most powerful hardware available.
B. Install the latest database software.
C. Define clear business objectives and data requirements.
, D. Begin migrating all existing data to the new system.
🟢 Correct Answer: C. Define clear business objectives and data requirements.
🔴 Explanation: Understanding the business needs and what the data must achieve is foundational to any successful
data management implementation. Technology choices and migration strategies should follow these defined
requirements.
Question 7
The principle of 'Data Minimization' in data privacy dictates that:
A. Data should be stored indefinitely for historical purposes.
B. Only the minimum amount of personal data necessary to achieve a specific purpose should be collected and
processed.
C. Data should be deleted as soon as it is collected.
D. Data should be made publicly available for maximum transparency.
🟢 Correct Answer: B. Only the minimum amount of personal data necessary to achieve a specific purpose should
be collected and processed.
🔴 Explanation: Data minimization is a key principle in privacy regulations like GDPR, requiring that organizations
limit data collection and retention to what is strictly necessary for their stated purpose.
Question 8
Which of the following is a key characteristic of a relational database?
A. Data is stored in a hierarchical tree structure.
B. Data is stored in unstructured files.
C. Data is organized into tables with rows and columns.
D. Data is stored as key-value pairs.
🟢 Correct Answer: C. Data is organized into tables with rows and columns.
🔴 Explanation: The relational model, pioneered by E.F. Codd, organizes data into relations, more commonly known
as tables, which consist of tuples (rows) and attributes (columns).
WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains
Data Governance and Management Concepts
Database Design and Data Modeling
SQL and Query Languages
Data Warehousing and Business Intelligence
Data Security, Privacy, and Ethics
Data Integration and Interoperability
Introduction
This comprehensive assessment is designed to evaluate a candidate's foundational knowledge and practical skills in
data management, as prescribed by the WGU C175-D426 exam. The examination covers the core principles of data
governance, database design, SQL, data warehousing, and security, extending into professional application and ethical
decision-making. It is structured around multiple-choice and scenario-based questions that require both recall of
essential facts and the application of knowledge to realistic business problems. Successful completion of this exam
demonstrates competency in using data management tools and methodologies to support organizational goals, ensure
data integrity, and navigate complex professional standards.
Question 1
Which of the following best describes the primary goal of data governance?
A. To ensure data is stored in the most cost-effective manner possible.
B. To establish a framework for managing data availability, usability, integrity, and security.
C. To maximize the speed of data retrieval for all users.
,D. To enable the free exchange of data between different departments without restrictions.
🟢 Correct Answer: B. To establish a framework for managing data availability, usability, integrity, and security.
🔴 Explanation: Data governance is the overarching process of managing the availability, usability, integrity, and
security of data in an enterprise. While cost, speed, and sharing are factors, the primary goal is to create a
comprehensive framework.
Question 2
In the context of the ACID properties, which property ensures that a transaction is treated as a single, indivisible unit,
where either all operations are executed or none are?
A. Consistency
B. Isolation
C. Durability
D. Atomicity
🟢 Correct Answer: D. Atomicity
🔴 Explanation: Atomicity is the property that guarantees that a transaction is an indivisible unit of work. If any part
of the transaction fails, the entire transaction is rolled back, leaving the data unchanged.
Question 3
A database administrator is designing a new system for a university. The system must record that each student can
be enrolled in many courses, and each course can have many students. What type of relationship is this?
A. One-to-One
B. One-to-Many
C. Many-to-One
D. Many-to-Many
🟢 Correct Answer: D. Many-to-Many
🔴 Explanation: This is a classic many-to-many relationship, which is typically resolved in a relational database by
creating a junction (or associative) table.
,Question 4
Which SQL statement is used to change the structure of an existing table, such as adding or deleting a column?
A. UPDATE
B. ALTER TABLE
C. MODIFY TABLE
D. CHANGE TABLE
🟢 Correct Answer: B. ALTER TABLE
🔴 Explanation: ALTER TABLE is the Data Definition Language (DDL) command used to modify the structure of an
existing database table. UPDATE is for modifying data within rows.
Question 5
What is the primary purpose of a data warehouse?
A. To serve as the primary operational database for daily transactions.
B. To provide a centralized repository for historical and aggregated data for analysis and reporting.
C. To back up data from multiple operational systems.
D. To manage the flow of data between different applications.
🟢 Correct Answer: B. To provide a centralized repository for historical and aggregated data for analysis and
reporting.
🔴 Explanation: Data warehouses are specifically designed for analytical processing and reporting, holding large
volumes of historical data from multiple sources.
Question 6
An organization is planning to implement a new data management system. What is the first and most critical step in
this process?
A. Purchase the most powerful hardware available.
B. Install the latest database software.
C. Define clear business objectives and data requirements.
, D. Begin migrating all existing data to the new system.
🟢 Correct Answer: C. Define clear business objectives and data requirements.
🔴 Explanation: Understanding the business needs and what the data must achieve is foundational to any successful
data management implementation. Technology choices and migration strategies should follow these defined
requirements.
Question 7
The principle of 'Data Minimization' in data privacy dictates that:
A. Data should be stored indefinitely for historical purposes.
B. Only the minimum amount of personal data necessary to achieve a specific purpose should be collected and
processed.
C. Data should be deleted as soon as it is collected.
D. Data should be made publicly available for maximum transparency.
🟢 Correct Answer: B. Only the minimum amount of personal data necessary to achieve a specific purpose should
be collected and processed.
🔴 Explanation: Data minimization is a key principle in privacy regulations like GDPR, requiring that organizations
limit data collection and retention to what is strictly necessary for their stated purpose.
Question 8
Which of the following is a key characteristic of a relational database?
A. Data is stored in a hierarchical tree structure.
B. Data is stored in unstructured files.
C. Data is organized into tables with rows and columns.
D. Data is stored as key-value pairs.
🟢 Correct Answer: C. Data is organized into tables with rows and columns.
🔴 Explanation: The relational model, pioneered by E.F. Codd, organizes data into relations, more commonly known
as tables, which consist of tuples (rows) and attributes (columns).
