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Question ID 1571

Click on the EXHIBIT button and examine the table instance chart for the patient table.
You created the patient_vu view based on id_number and last_name from the patient table. What is the best way to modify the view to contain only those patients born in 1997?

Option A

A.    Replace the view adding a WHERE clause.

 

Option B

B.    Drop the patient_vu, then create a new view with a HAVING clause.
 

Option C

C.    Drop the patient_vu, then create a new view with a WHERE clause.
 

Option D

D.    Use the ALTER command to add a WHERE clause to verify the time.

Correct Answer A
Explanation


Question ID 1572

Examine the structure of the STUDENT table: Name Null? Type
STUD_ID NOT NULL NUMBER(3) NAME NOT NULL VARCHAR2(25) ADDRESS VARCHAR2(50)
GRADUATION DATE
Graduation column is a foreign key column to the GRADDATE table. Examine the data in the GRADDATE table:
GRADUATION
20-JAN-1999 12-MAY-1999 19-JAN-2000 25-MAY-2000 13-JAN-2001 29-MAY-2001
Which update statement produces the following error?
ORA-02291: integrity constraint (SYS_C23) violated - parent key not found
 

Option A

A.    UPDATE student SET name = 'Smith', graduation = '29-MAY-2001'
WHERE stud_id = 101;
 

Option B

B.    UPDATE student SET name = 'Smith', graduation = '15-AUG-2000'
WHERE stud_id = 101;

Correct Answer B
Explanation

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