que_027.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 027	
</b></p><hr color="#99CCFF">

<p>Examine the SQL statements that creates ORDERS table:</p><table border="1" bordercolor="gray">
	<tr>
		<td align="left" width="486" bgcolor="#99CCFF">
			<p><b>Order  talbe</b></p>
		</td>
	</tr>
	<tr>
		<td align="left" bgcolor="white">
			<p><b>CREATE  TABLE  orders<br> &nbsp;&nbsp;(SER_NO  NUMBER  UNIQUE,  <br> 
            &nbsp;&nbsp;&nbsp;ORDER_ID  NUMBER, <br> &nbsp;&nbsp;&nbsp;ORDER_DATE  DATE  NOT  NULL,<br> 
            &nbsp;&nbsp;&nbsp;STATUS  VARCHARD2(10)  CHECK  <br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(status  IN  ('CREDIT','CASH')),  <br> 
            &nbsp;&nbsp;&nbsp;PROD_ID NUMBER REFERENCES  PRODUCTS(PRODUCT_ID),<br> 
            &nbsp;&nbsp;&nbsp;ORD_TOTAL  NUMBER,  <br> &nbsp;&nbsp;&nbsp;PRIMARY  KEY  (order_id,  order_date));  </b></p>
		</td>
	</tr>
</table>
<p>For which columns would an index be automatically created when you execute the above 
SQL statement? (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> SER_NO 
			</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>   ORDER_ID 
			</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>   STATUS 
			</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>   PROD_ID 
			</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>   ORD_TOTAL 
			</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>   Composite index on ORDER_ID and ORDER_DATE</p>
		</td>
	</tr>
	</span>
	</form>
</table>

<br></body>
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