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What Is A Null Value? |
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Answer» A FIELD with a NULL value is a field with no value. A NULL value is different from a zero value or a field that contains SPACES. A field with a NULL value is one that has been LEFT blank during record creation. Assume, there is a field in a table is optional and it is possible to INSERT a record without ADDING a value to the optional field then the field will be saved with a NULL value. A field with a NULL value is a field with no value. A NULL value is different from a zero value or a field that contains spaces. A field with a NULL value is one that has been left blank during record creation. Assume, there is a field in a table is optional and it is possible to insert a record without adding a value to the optional field then the field will be saved with a NULL value. |
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