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Data Management Foundations — D426 WGU Topics Study Guide

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Comprehensive study guide for Data Management Foundations (D426) from Western Governors University (WGU). Covers key course topics including data modeling, database design, SQL queries, data governance, and management best practices. Designed to help students review essential concepts, reinforce learning, and prepare effectively for D426 assessments and exams.

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Data Management - Foundations - D426 WGU Topics from course Data
guideManagement - Foundations - D426 WGU Topics from course guide 2/18/2026




A database operation that reads table blocks directly, without accessing an index.



Give this one a go later!



1 Range scan Table scan



3 Cluster scan 4 Index scan


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Terms in this set (183)



Data Numeric, textual, visual, or audio information that describes real-
world systems. It is collected and processed to aid in a variety of
tasks.


Analog Data Most common before computers. Audio was recorded as vibrations
impressed on vinyl disks.



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,Data Management - Foundations - D426 WGU Topics from course Data
guideManagement - Foundations - D426 WGU Topics from course guide 2/18/2026




Digital Data Most common today. Encoded as 0s and 1s on electronic magnetic
data.


Database A collection of data in structured format. In principle, can be stored
on paper or even clay tablets.


Database System (DBMS) Software that reads and writes in a database.


Query A request to retrieve or change data in a database. Typically inserts
new data, retrieves data, updates, data, or deletes data from a
database.


Query Language Specialized programming language designed specifically for
database systems. Reads and writes data efficiently.


Database Application Software that HELPS business users interact with database systems.


Database Administrator What role am I?


Responsible for securing the database system against unauthorized
users. They enforce procedures for user access and database system
availability.




Page 2 Data Management - Foundations - D426 WGU Topics from course guide.pdf

, Data Management - Foundations - D426 WGU Topics from course Data
guideManagement - Foundations - D426 WGU Topics from course guide 2/18/2026




Database Designer What role am I?


Determines the format of each data element AND the overall
database STRUCTURE. Must balance priorities like including
storage, response time, and support for rules that govern the data.


Database Programmer What role am I?


Develop programs that utilize a database and write applications that
combine query languages and general purpose programming
language.


Database User What role am I?


A consumer of data in a database. They request, update, or use
stored data to generate reports or information.


Transaction A group of queries that MUST be completed or rejected as a whole.


Architecture Describes the internal components AND the relationships between
components.




Page 3 Data Management - Foundations - D426 WGU Topics from course guide.pdf

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