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Exam (elaborations)

WGU Data Management - Foundations - D426 CORRECT 100%

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  • Course
  • WGU D426
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  • WGU D426

Which requirement within large, complex databases ensures users have limited access to the database? Recovery Performance Authorization Confidentiality - ANSWER Authorization Which design type specifies database requirements without regard to a specific database system? Physical design ...

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  • September 17, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • wgu data management
  • WGU D426
  • WGU D426
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shantelleG
WGU Data Management - Foundations -
D426 CORRECT 100%
Which requirement within large, complex databases ensures users have limited access to the database?



Recovery

Performance

Authorization

Confidentiality - ANSWER Authorization



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



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

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



16. Which type of join is demonstrated by the following query?

SELECT Dog.Nickname, Kennel.Address

FROM Dog, Kennel

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