1. A null value represents the absence of a value for a record in a field.
2. Null isn't allocated any memory, Blank is allocated to a memory location,
although the value stored in the memory is "" .
3. Null has no bounds, it can be used for string, integer, date etc.
but empty string is just regarding a string. it's a string like : 'Computer'.
2. Null isn't allocated any memory, Blank is allocated to a memory location,
although the value stored in the memory is "" .
3. Null has no bounds, it can be used for string, integer, date etc.
but empty string is just regarding a string. it's a string like : 'Computer'.
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