WGU - D427 - Data Management - Applications –
Pre Assessment OA EXAM COMPLETE ACTUAL EXAM
QUESTIONS AND WELL ELABORATED ANSWERS
(VERIFIED ANSWERS) NEWEST EXAM 2026 |
GUARANTEED PASS A+ (REVISED EXAM)
How would a database engine process an update that violates a RESTRICT
referential integrity constraint?
- The offending value would be set to the database default.
- The update would be rejected by the database.
- The offending value would be changed to NULL.
- The updated value would flow to the primary key.
The update would be rejected by the database.
Which restriction applies when using a materialized view?
- The users of the view must provide search terms.
- The underlying data must be periodically refreshed.
- The tables referenced in the view must be indexed.
- The rows in the table must be compressed.
The underlying data must be periodically refreshed.
,Which query illustrates performing an outer join of the Movie table with a
different table?
- SELECT M.Title, A.Actor FROM Movie M, Actor A
WHERE M.ActorID = A.ID
- SELECT M.Title, A.Actor FROM Movie M
LEFT JOIN Movie MB ON M.ID, Actor A
- SELECT M.Title, A.Actor FROM Movie M
RIGHT JOIN Actor A ON M.ActorID = A.Id
- SELECT M.Title, A.Actor FROM Movie M
INNER JOIN Actor A ON M.ActorID = A.ID
SELECT M.Title, A.Actor FROM Movie M
LEFT JOIN Movie MB ON M.ID Actor A
,Assume there are two tables, A and B.
Which rows will always be included in the result set if Table A is inner joined
with Table B?
- Only rows in Tables A and B that share the join condition
- all rows in Table B
- All rows in Table A
- Only rows in Tables A and B that do not share the join condition
Only rows in Table A and B that share the join condition
1. Portland, OR 97212
How many attributes are present in the address fragment?
-1
-2
-3
-4
3
, 2. The Patient table has the following columns:
first_name varchar(20)
last_name varchar (30)
birthdate date
patient_id int
Which column should be designated as the primary key for the Patient
table?
- first_name
- last_name
- birthdate
- patient_id
patient_id
Pre Assessment OA EXAM COMPLETE ACTUAL EXAM
QUESTIONS AND WELL ELABORATED ANSWERS
(VERIFIED ANSWERS) NEWEST EXAM 2026 |
GUARANTEED PASS A+ (REVISED EXAM)
How would a database engine process an update that violates a RESTRICT
referential integrity constraint?
- The offending value would be set to the database default.
- The update would be rejected by the database.
- The offending value would be changed to NULL.
- The updated value would flow to the primary key.
The update would be rejected by the database.
Which restriction applies when using a materialized view?
- The users of the view must provide search terms.
- The underlying data must be periodically refreshed.
- The tables referenced in the view must be indexed.
- The rows in the table must be compressed.
The underlying data must be periodically refreshed.
,Which query illustrates performing an outer join of the Movie table with a
different table?
- SELECT M.Title, A.Actor FROM Movie M, Actor A
WHERE M.ActorID = A.ID
- SELECT M.Title, A.Actor FROM Movie M
LEFT JOIN Movie MB ON M.ID, Actor A
- SELECT M.Title, A.Actor FROM Movie M
RIGHT JOIN Actor A ON M.ActorID = A.Id
- SELECT M.Title, A.Actor FROM Movie M
INNER JOIN Actor A ON M.ActorID = A.ID
SELECT M.Title, A.Actor FROM Movie M
LEFT JOIN Movie MB ON M.ID Actor A
,Assume there are two tables, A and B.
Which rows will always be included in the result set if Table A is inner joined
with Table B?
- Only rows in Tables A and B that share the join condition
- all rows in Table B
- All rows in Table A
- Only rows in Tables A and B that do not share the join condition
Only rows in Table A and B that share the join condition
1. Portland, OR 97212
How many attributes are present in the address fragment?
-1
-2
-3
-4
3
, 2. The Patient table has the following columns:
first_name varchar(20)
last_name varchar (30)
birthdate date
patient_id int
Which column should be designated as the primary key for the Patient
table?
- first_name
- last_name
- birthdate
- patient_id
patient_id
