WGU D427 - Data Management Applications Pre-Assessment Exam with Questions and Verified Answers 2025/2026 Graded A+

WGU D427 - Data Management Applications Pre-Assessment
Exam with Questions and Verified Answers
2025/2026 Graded A+




1. San Francisco, CA 94110US
E E E E



A
How many attributes are present in the address fragment?
E E E E E E E E




-1
E



-2
E



-3
E



- 4: 4
E E



2. The Package table has the following columns:Weig
E E E E E E E



ht—decimal
Description—
optional variable length stringLastChangedDate
E E E E



—date TrackingNumber—integer
E



Which column should be designated the primary key for the Package table?
E E E E E E E E E E E




- Weight
1E/E20

,- Description
- LastChangedDate
- TrackingNumber: Tracking Number E E



3. Which data type will store "2022-01-
E E E E E



10 14:22:12" as a temporal value withoutloss of information?
E E E E E E E E E




- DATE
- DATETIME
- DECIMAL
- BIGINT: DATETIME
E



4. Which SQL command is an example of data definition language (DDL)?
E E E E E E E E E E




- UPDATE
- ALTER
- SELECT
- DELETE: CREATE, ALTER, OR DROP
E E E E



5. How would a database engine process an update that violates a RESTRICTreferentia
E E E E E E E E E E E E



l integrity constraint?
E E




- The offending value would be set to the database default.
E E E E E E E E E



- The update would be rejected by the database.
E E E E E E E



- The offending value would be changed to NULL.
E E E E E E E




2E/E20

,-
The updated value would flow to the primary key.: The update would be rejectedby the data
E E E E E E E E E E E E E E E E E



base.
6. Which restriction applies when using a materialized view?
E E E E E E E




- The users of the view must provide search terms.
E E E E E E E E



- The underlying data must be periodically refreshed.
E E E E E E



- The tables referenced in the view must be indexed.
E E E E E E E E



- The rows in the table must be compressed.: The underlying data must beperiodica
E E E E E E E E E E E E E



lly refreshed.
E



7. Which query illustrates performing an outer join of the Movie table with adifferent
E E E E E E E E E E E E E E



table?


- SELECT M.Title, A.Actor FROM Movie M, Actor AWHER
E E E E E E E E



E M.ActorID = A.ID
E E E




- SELECT M.Title, A.Actor FROM Movie MLEFT
E E E E E E E



JOIN Movie MB ON M.ID, Actor A
E E E E E E




- SELECT M.Title, A.Actor FROM Movie MRIGH
E E E E E E



T JOIN Actor A ON M.ActorID = A.Id
E E E E E E E




- SELECT M.Title, A.Actor FROM Movie M
E E E E E



INNER JOIN Actor A ON M.ActorID = A.ID: SELECT M.Title, A.Actor FROM MovieM
E E E E E E E E E E E E E




3E/E20

, LEFT JOIN Movie MB ON M.ID Actor A
E E E E E E E



8. Assume there are two tables, A and B. E E E E E E E



Which rows will always be included in the result set if Table A is inner joinedwith Tabl
E E E E E E E E E E E E E E E E E



e B? E




- Only rows in Tables A and B that share the join condition
E E E E E E E E E E E



- all rows in Table B
E E E E



- All rows in Table A
E E E E



- Only rows in Tables A and B that do not share the join condition: Only rowsin Table A
E E E E E E E E E E E E E E E E E E E



and B that share the join condition
E E E E E E



9. 1. Portland, OR 97212
E E E



How many attributes are present in the address fragment?
E E E E E E E E




-1 E



-2 E




4E/E20