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<p><b><span style="font-size:22pt">Explaination 009: &nbsp;</span></b></p>

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	ALTER TABLE statement with ENABLE CONSTRAINT keywords is correct answer to enable an existing constraint. <br>
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	  Incorrect Answers <br>
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	<p>
	  A: This statement is missing CONSTRAINT keyword. <br>
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	  B: "STATUS =" is incorrect syntax to enable constraint for the table. <br>
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	  D: There is no STATUS keyword in the command to enable constraint. <br>
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	  E: There is no TURN ON keywords in the command to enable constraint. <br>
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	  F: There is no TURN ON keywords in the command to enable constraint. <br>
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	<p>
	  OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 239-240 <br>
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	<p>
	  Chapter 5: Creating Oracle Database Object
	</p>

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