📄 que_104.htm
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<b>QUESTION 104
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<p>The EMPLOYEES table has these columns: </p><table border="1" bordercolor="gray">
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<p><b>The EMPLOYEES table</b></p>
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<p><b>LAST NAME VARCHAR2(35) </b></p>
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<p><b>SALARY NUMBER(8,2) </b></p>
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<p><b>HIRE_DATE DATE </b></p>
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<p>Management wants to add a default value to the SALARY column. You plan to alter the
table by using this SQL statement: <br>
ALTER TABLE EMPLOYEES
<br>MODIFY (SALARY DEFAULT 5000);
<br><br>What is true about your ALTER statement? </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> Column definitions cannot be altered to add DEFAULT values.
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<p><b><input type="radio" name="AN" value="B"> B.</b></p>
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<p> A change to the DEFAULT value affects only subsequent insertions to the table.
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<p><b><input type="radio" name="AN" value="C"> C.</b></p>
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<p> Column definitions cannot be altered at add DEFAULT values for columns with a NUMBER data type.
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<p><b><input type="radio" name="AN" value="D"> D.</b></p>
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<p> All the rows that have a NULL value for the SALARY column will be updated with the value 5000.</p>
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