WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA
2026 EXAM | ACTUAL EXAM 2 QUESTIONS AND CORRECT
VERIFIED ANSWERS WITH RATIONALES||LATEST 2026
VERSION!!!
1.Which design type specifies database requirements without regard
to a specific database system?
Physical design
Conceptual design
Logical design
Abstract design - Answer -Conceptual design
2.Which requirement within large, complex databases ensures users
have limited access to the database?
Recovery
Performance
Authorization
Confidentiality - Answer -Authorization
3.What characterizes the rules of relational databases?
-They are logical constraints that ensure the data is valid.
-They are based on business policy and specific databases.
-They represent data volumes and rapidly changing data structures.
-They embody the theoretical foundation of the SQL language. -
Answer -They are logical constraints that ensure the data is valid.
4.Which event will result in an error code and error description when
using MySQL Server?
pg. 1
,When the server or updates are incorrectly installed
When an SQL statement is entered to locate errors in the database
When an SQL statement is syntactically incorrect
When a Mac OS shortcut code is used on a Windows OS
- Answer -When an SQL statement is syntactically incorrect
5. Which data type should be used to store whole integer values, such
as age?
NUM
VARCHAR
DATE
INT - Answer -INT
6. Which text-based interface is included in the MySQL Server
Download?
MySQL Command-Line Client
MySQL Workbench
MySQL Enterprise
MySQL Community - Answer -MySQL Command-Line Client
7. Which database system includes the World database during its
installation?
MySQL
MongoDB
Oracle
PostgreSQL - Answer -MySQL
pg. 2
,8. What is the standardized language of relational database systems?
Contextual Query Language
Structured Query Language
Select Query Language
Object Query Language - Answer -Structured Query Language
9. Which SQL sublanguage is used to manage database access?
Data Definition Language (DDL)
Data Query Language (DQL)
Data Manipulation Language (DML)
Data Control Language (DCL) - Answer -Data Control Language
(DCL)
10. Which SQL sublanguage is used to roll back database changes?
Data Transaction Language (DTL)
Data Manipulation Language (DML)
Data Query Language (DQL)
Data Control Language (DCL) - Answer -Data Transaction Language
(DTL)
11. Which format is used by the TIME data type in MySQL?
YYYY-MM-DD
YYYY-MM-DD hh:mm:ss
hh:mm:ss
pg. 3
, hh:mm:ss YYYY-MM-DD - Answer -hh:mm:ss
12. Which MySQL operator is the last in the order of operator
precedence?
-OR
NOT
= - Answer -OR
13. Which operator is used to compare columns from the left and right
tables in MySQL?
<=
+
=
* - Answer - =
14. Which type of join combines two tables without comparing
columns?
SELF
EQUIJOIN
OUTER
CROSS - Answer -CROSS
15. Which type of join compares columns using only the = operator?
Equijoin
Non-equijoin
Outer join
Inner join - Answer -Equijoin
pg. 4
2026 EXAM | ACTUAL EXAM 2 QUESTIONS AND CORRECT
VERIFIED ANSWERS WITH RATIONALES||LATEST 2026
VERSION!!!
1.Which design type specifies database requirements without regard
to a specific database system?
Physical design
Conceptual design
Logical design
Abstract design - Answer -Conceptual design
2.Which requirement within large, complex databases ensures users
have limited access to the database?
Recovery
Performance
Authorization
Confidentiality - Answer -Authorization
3.What characterizes the rules of relational databases?
-They are logical constraints that ensure the data is valid.
-They are based on business policy and specific databases.
-They represent data volumes and rapidly changing data structures.
-They embody the theoretical foundation of the SQL language. -
Answer -They are logical constraints that ensure the data is valid.
4.Which event will result in an error code and error description when
using MySQL Server?
pg. 1
,When the server or updates are incorrectly installed
When an SQL statement is entered to locate errors in the database
When an SQL statement is syntactically incorrect
When a Mac OS shortcut code is used on a Windows OS
- Answer -When an SQL statement is syntactically incorrect
5. Which data type should be used to store whole integer values, such
as age?
NUM
VARCHAR
DATE
INT - Answer -INT
6. Which text-based interface is included in the MySQL Server
Download?
MySQL Command-Line Client
MySQL Workbench
MySQL Enterprise
MySQL Community - Answer -MySQL Command-Line Client
7. Which database system includes the World database during its
installation?
MySQL
MongoDB
Oracle
PostgreSQL - Answer -MySQL
pg. 2
,8. What is the standardized language of relational database systems?
Contextual Query Language
Structured Query Language
Select Query Language
Object Query Language - Answer -Structured Query Language
9. Which SQL sublanguage is used to manage database access?
Data Definition Language (DDL)
Data Query Language (DQL)
Data Manipulation Language (DML)
Data Control Language (DCL) - Answer -Data Control Language
(DCL)
10. Which SQL sublanguage is used to roll back database changes?
Data Transaction Language (DTL)
Data Manipulation Language (DML)
Data Query Language (DQL)
Data Control Language (DCL) - Answer -Data Transaction Language
(DTL)
11. Which format is used by the TIME data type in MySQL?
YYYY-MM-DD
YYYY-MM-DD hh:mm:ss
hh:mm:ss
pg. 3
, hh:mm:ss YYYY-MM-DD - Answer -hh:mm:ss
12. Which MySQL operator is the last in the order of operator
precedence?
-OR
NOT
= - Answer -OR
13. Which operator is used to compare columns from the left and right
tables in MySQL?
<=
+
=
* - Answer - =
14. Which type of join combines two tables without comparing
columns?
SELF
EQUIJOIN
OUTER
CROSS - Answer -CROSS
15. Which type of join compares columns using only the = operator?
Equijoin
Non-equijoin
Outer join
Inner join - Answer -Equijoin
pg. 4
