📄 que_031.htm
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<title>Ocp test </title>
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<b>QUESTION 031
</b></p><hr color="#99CCFF">
<p>Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables:</p><table border="1" bordercolor="gray">
<tr>
<td align="left" width="486" bgcolor="#99CCFF">
<p><b>EMPLOYEES </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>EMPLOYEE_ID NUMBER Primary Key </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>FIRST_NAME VARCHAR2(25) </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>LAST_NAME VARCHAR2(25) </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>HIRE_DATE DATE </b></p>
</td>
</tr>
</table>
<BR>
<table border="1" bordercolor="gray">
<tr>
<td align="left" width="486" bgcolor="#99CCFF">
<p><b>NEW EMPLOYEES </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>EMPLOYEE_ID NUMBER Primary Key </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>NAME VARCHAR2(60) </b></p>
</td>
</tr>
</table>
<p><br>Which UPDATE statement is valid? </p>
<table border="1" bordercolor="gray" width="687">
<form name="youAnsForm">
<span style="font-size:18pt;">
<tr>
<td align="center" width="88">
<p><b><input type="radio" name="AN" value="A"> A.</b></p>
</td>
<td align="left" width="583">
<p> UPDATE new_employees <br>SET name = (SELECT last_name||first_name <br>
FROM employees <br>
WhERE employee_id
=180) <br>
WHERE employee_id =180;
</p>
</td>
</tr>
<tr>
<td align="center" width="88">
<p><b><input type="radio" name="AN" value="B"> B.</b></p>
</td>
<td align="left" width="583">
<p> UPDATE new_employees <br>SET name = (SELECT
last_name||first_name <br>
FROM employees) <br>
WHERE employee_id =180;
</p>
</td>
</tr>
<tr>
<td align="center" width="88">
<p><b><input type="radio" name="AN" value="C"> C.</b></p>
</td>
<td align="left" width="583">
<p> UPDATE new_employees <br>SET name = (SELECT last_name|| first_name <br>
FROM employees <br>
WHERE employee_id
=180) <br>
WHERE employee_id =(SELECT employee_id <br>
FROM new employees);
</p>
</td>
</tr>
<tr>
<td align="center" width="88">
<p><b><input type="radio" name="AN" value="D"> D.</b></p>
</td>
<td align="left" width="583">
<p> UPDATE new_employees <br>SET name = (SELECT last name|| first_name <br>
FROM employees <br>
WHERE employee_id=
(SELECT employee_id <br>
FROM new_employees)) <br>WHERE employee_id =180;</p>
</td>
</tr>
</span>
</form>
</table>
<br></body>
</html>
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