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<p><b><span style="font-size:22pt">Explaination 176: &nbsp;</span></b></p>

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	<p>
	the EMP_ID_SEQ sequence is not affected by modification to the EMPLOYEES table. Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence. <br>
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	<p>
	  Incorrect answer : <br>
	</p>

	<p>
	  A EMP_ID_SEQ sequence can be use to populate JOB_ID <br>
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	<p>
	  B EMP_ID_SEQ sequence will not be invalidate when column in EMPLOYEE_ID is modify. <br>
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	<p>
	  E EMP_ID_SEQ sequence will be dropped automatically when you drop the EMPLOYEES table. <br>
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	<p>
	  F EMP_ID_SEQ sequence will be dropped automatically when you drop the EMPLOYEE_ID column. <br>
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	<p>
	  Refer : Introduction to Oracle9i : SQL, Oracle University Study Guide, 12-4
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