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<b>QUESTION 078 </b>
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<p>Examine the structure of the EMPLOYEES table: </p><table border="1" bordercolor="gray">
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<p><b>EMPLOYEES table</b></p>
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<p><b>EMPLOYEE_ID NUMBER NOT NULL, Primary Key </b></p>
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<p><b>LAST_NAME VARCNAR2(30) </b></p>
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<p><b>FIRST_NAME VARCNAR2(30) </b></p>
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<p><b>JOB_ID NUMBER </b></p>
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<p><b>SAL NUMBER </b></p>
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<p><b>MGR_ID NUMBER References EMPLOYEE_ID column </b></p>
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<p><b>DEPARTMENT_ID NUMBER </b></p>
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<p>You need to create an index called NAME_IDX on the first name and last name fields of the EMPLOYEES table. Which SQL statement would you use to perform this task? </p><table border="1" bordercolor="gray" width="665">
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<p><b><input type="radio" name="AN" value="A"> A.</b></p>
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<p> CREATE INDEX NAME_IDX (first_name, last_name);
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<p><b><input type="radio" name="AN" value="B"> B.</b></p>
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<p> CREATE INDEX NAME_IDX (first_name AND last_name);
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<p><b><input type="radio" name="AN" value="C"> C.</b></p>
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<p> CREATE INDEX NAME_IDX <br>
ON (first_name, last_name);
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<p><b><input type="radio" name="AN" value="D"> D.</b></p>
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<p> CREATE INDEX NAME_IDX <br>
ON employees (first_name AND last_name);
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<p><b><input type="radio" name="AN" value="E"> E.</b></p>
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<p> CREATE INDEX NAME_IDX <br>
ON employees(first_name, last_name);
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<p><b><input type="radio" name="AN" value="F"> F.</b></p>
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<p> CREATE INDEX NAME_IDX <br>
FOR employees(first_name, last_name);</b></p>
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