que_043.htm

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<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
<title>Ocp test </title>
</head>
<body bgcolor="white" text="black" link="blue" vlink="purple" alink="red">
<p align="left" color="black" style="font-size:16pt;">
	<b>QUESTION 043	
</b></p><hr color="#99CCFF">

<p>Which two statements about subqueries are true? (Choose two.)</p><table border="1" bordercolor="gray" width="665">
	<form name="youAnsForm">
	<span style="font-size:18pt;">
	<tr>
		<td align="center" width="89">
			<p><b><input type="checkbox" name="AN" value="A">  A.</b></p>
		</td>
		<td align="left" width="566">
			<p> A single row subquery can retrieve data from only one table. 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="checkbox" name="AN" value="B">  B.</b></p>
		</td>
		<td align="left" width="566">
			<p>   A SQL query statement cannot display data from table B that is referred to in its
			  subquery, unless table B is included in the main query's FROM clause. 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="checkbox" name="AN" value="C">  C.</b></p>
		</td>
		<td align="left" width="566">
			<p>   A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause. 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="checkbox" name="AN" value="D">  D.</b></p>
		</td>
		<td align="left" width="566">
			<p>   A single row subquery can retrieve data from more than one table. 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="checkbox" name="AN" value="E">  E.</b></p>
		</td>
		<td align="left" width="566">
			<p>   A single row subquery cannot be used in a condition where the LIKE operator is used for comparison. 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="checkbox" name="AN" value="F">  F.</b></p>
		</td>
		<td align="left" width="566">
			<p>   A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison</p>
		</td>
	</tr>
	</span>
	</form>
</table>

<br></body>
</html>

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