WGU D426 EXAM PREP: QUESTIONS AND
ANSWERS 2026 FINAL PAPER.
◍ Which design type specifies database requirements without regard
to a specific database system?
Physical design
Conceptual design
Logical design
Abstract design Answer:Conceptual design
◍ 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?
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
◍ 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)
ANSWERS 2026 FINAL PAPER.
◍ Which design type specifies database requirements without regard
to a specific database system?
Physical design
Conceptual design
Logical design
Abstract design Answer:Conceptual design
◍ 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?
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
◍ 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)
