WGU D335 Practice Test 1 | Questions and
Answers | OA Guide | 2025/2026 Update | 100%
Correct | A+ Graded
Section 1: Introduction
This document features Practice Test 1 for WGU course D335, fully updated for the
2025/2026 academic year. It includes verified questions and correct answers aligned with the
Objective Assessment (OA) guide. Topics include data management, database concepts, SQL
fundamentals, and data modeling. An ideal resource for students aiming to pass the D335
assessment with top marks.
Section 2: Exam Questions and Answers
Format: Multiple-choice questions
Four answer choices per question (A–D)
Correct answer highlighted.
Includes clear rationale where needed for concept reinforcement
1. Question 1: What is the primary purpose of data management?
o (a) To create graphics
o (b) To organize and maintain data integrity
o (c) To design user interfaces
o (d) To perform statistical analysis
Rationale: Data management ensures data is accurate, accessible, and secure.
2. Question 2: Which component is essential in a database system?
o (a) Web browser
o (b) Database management system (DBMS)
o (c) Spreadsheet software
o (d) Text editor
Rationale: A DBMS manages and organizes database operations.
3. Question 3: What does SQL stand for?
o (a) Simple Query Language
o (b) Structured Query Language
o (c) Standard Query Logic
o (d) Sequential Query Language
Rationale: SQL is the standard language for managing relational databases.
4. Question 4: Which SQL command is used to retrieve data?
o (a) INSERT
o (b) SELECT
o (c) UPDATE
o (d) DELETE
Rationale: SELECT retrieves data from a database table.
5. Question 5: What is a primary key in a database?
o (a) A foreign key reference
o (b) A unique identifier for each record
o (c) A data type
Answers | OA Guide | 2025/2026 Update | 100%
Correct | A+ Graded
Section 1: Introduction
This document features Practice Test 1 for WGU course D335, fully updated for the
2025/2026 academic year. It includes verified questions and correct answers aligned with the
Objective Assessment (OA) guide. Topics include data management, database concepts, SQL
fundamentals, and data modeling. An ideal resource for students aiming to pass the D335
assessment with top marks.
Section 2: Exam Questions and Answers
Format: Multiple-choice questions
Four answer choices per question (A–D)
Correct answer highlighted.
Includes clear rationale where needed for concept reinforcement
1. Question 1: What is the primary purpose of data management?
o (a) To create graphics
o (b) To organize and maintain data integrity
o (c) To design user interfaces
o (d) To perform statistical analysis
Rationale: Data management ensures data is accurate, accessible, and secure.
2. Question 2: Which component is essential in a database system?
o (a) Web browser
o (b) Database management system (DBMS)
o (c) Spreadsheet software
o (d) Text editor
Rationale: A DBMS manages and organizes database operations.
3. Question 3: What does SQL stand for?
o (a) Simple Query Language
o (b) Structured Query Language
o (c) Standard Query Logic
o (d) Sequential Query Language
Rationale: SQL is the standard language for managing relational databases.
4. Question 4: Which SQL command is used to retrieve data?
o (a) INSERT
o (b) SELECT
o (c) UPDATE
o (d) DELETE
Rationale: SELECT retrieves data from a database table.
5. Question 5: What is a primary key in a database?
o (a) A foreign key reference
o (b) A unique identifier for each record
o (c) A data type
