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WHAT IS NULL INDICATOR ? WERE IS THIS USED? AND IF IT IS
USED IN FILES CONCEPT? HOW DO WE USE IT?
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We use Null Indicator to fetch the Null Values from the
database through the application Program.
If we don't mention Null Indictor, in that case Null Values will not be retrieved by application program.
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| Is This Answer Correct ? | 1 Yes | 0 No |
NULL indicator specifically used to find the value is present
or not in Table. For PRIMARY key the value should present.
When working with this key in program, there may be chance of
no value is present/value truncated. In such cases, NULL
indicator is used.
In file NULL indicator cannot be used.
| Is This Answer Correct ? | 0 Yes | 1 No |
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