exp_049.htm

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<title>Ocp test </title>
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<p><b><span style="font-size:22pt">Explaination 049: &nbsp;</span></b></p>

<span style="font-size:18pt">
	<p>
	Expression SYSDATE-HIRE_DATE will show number of days after date of hiring employee, so you need to divide result of expression on 365 and this compare result with 5. <br>
	</p>

	<p>
	  Incorrect Answers <br>
	</p>

	<p>
	  A: This query returns all employees who were hired more than 5 days ago. <br>
	</p>

	<p>
	  B: This query will not return any record because result of HIRE_DATE-SYSDATE expression will be negative number. <br>
	</p>

	<p>
	  D: You need to divide, not to multiply, SYSDATE-HIRE_DATE on the number of days in 1 year. <br>
	</p>

	<p>
	  OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 81-85 <br>
	</p>

	<p>
	  Chapter 2: Limiting, Sorting, and Manipulating Return Data
	</p>

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