WGU Data Management - Foundations - D426 CORRECT 100%
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Module
WGU D426
Institution
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
...
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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