que_116.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 116	</b>
</p><hr color="#99CCFF">

<p>The CUSTOMERS table has these columns: </p><table border="1" bordercolor="gray">
	<tr>
		<td align="left" width="486" bgcolor="#99CCFF">
			<p><b>CUSTOMERS  table  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>CUSTOMER_ID  NUMBER  (4)  NOT  NULL  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>CUSTOMER_NAME  VARCHAR2  (100)  NOT  NULL  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>STREET_ADDRESS  VARCHAR2  (150)  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>CITY_ADDRESS  VARHCAR2  (50)  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>STATE_ADDRESS  VARCHAR2  (50)  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>PROVINCE_ADDRESS  VARCHAR2  (50)  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>COUNTRY_ADDRESS  VARCHAR2  (50)  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>POSTAL_CODE  VARCHAR2  (12)  </b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>CUSTOMER_PHONE  VARCHAR2  (20)  </b></p>
		</td>
	</tr>
</table>
<p>The CUSTOMER_ID column is the primary key for the table. 
You need to determine how dispersed your customer base is. 
Which expression finds the number of different countries represented in the 
CUSTOMERS table? </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="radio" name="AN" value="A">  A.</b></p>
		</td>
		<td align="left" width="566">
			<p> COUNT(UPPER(country_address)) 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="radio" name="AN" value="B">  B.</b></p>
		</td>
		<td align="left" width="566">
			<p>   COUNT(DIFF(UPPER(country_address))) 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="radio" name="AN" value="C">  C.</b></p>
		</td>
		<td align="left" width="566">
			<p>   COUNT(UNIQUE(UPPER(country_address))) 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="radio" name="AN" value="D">  D.</b></p>
		</td>
		<td align="left" width="566">
			<p>   COUNT DISTINTC UPPER(country_address) 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="radio" name="AN" value="E">  E.</b></p>
		</td>
		<td align="left" width="566">
			<p>   COUNT(DISTINTC (UPPER(country_address))</b></p>
		</td>
	</tr>
	</span>
	</form>
</table>

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