📄 que_034.htm
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<b>QUESTION 034
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<p>Examine the structure if the EMPLOYEES table: </p><table border="1" bordercolor="gray">
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<p><b>EMPLOYEES table: </b></p>
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<p><b>EMPLOYEE_ID NUMBER NOT NULL, Primary Key </b></p>
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<p><b>EMP_NAME VARCHAR2(30) </b></p>
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<p><b>JOB_ID VARCHAR2(20) NOT NULL </b></p>
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<p><b>SAL NUMBER </b></p>
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<p><b>MGR_ID NUMBER References EMPLOYEE_ID column </b></p>
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<p><b>DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table </b></p>
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<p>You need to create a view called EMP_VU that allows the user to insert rows through
the view. Which SQL statement, when used to create the EMP_VU view, allows the user
to insert rows?</p><table border="1" bordercolor="gray" width="665">
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<p><b><input type="radio" name="AN" value="A"> A.</b></p>
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<p> CREATE VIEW emp_Vu AS <br>
SELECT employee_id, emp_name,
department_id <br>
FROM employees <br>
WHERE mgr_id IN (102, 120);
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<p><b><input type="radio" name="AN" value="B"> B.</b></p>
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<p> CREATE VIEW emp_Vu AS <br>
SELECT employee_id, emp_name, job_id,
department_id <br>
FROM employees <br>
WHERE mgr_id IN (102, 120);
</p>
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<p><b><input type="radio" name="AN" value="C"> C.</b></p>
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<p> CREATE VIEW emp_Vu AS <br>
SELECT department_id, SUM(sal) TOTALSAL <br>
FROM employees <br>
WHERE mgr_id IN (102, 120) <br>
GROUP BY department_id;
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<p><b><input type="radio" name="AN" value="D"> D.</b></p>
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<p> CREATE VIEW emp_Vu AS <br>
SELECT employee_id, emp_name, job_id, <br>
DISTINCT department_id <br>
FROM employees;</p>
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