Can anyone explain me what are the main difference between a null value and blank value in database. It important please help me out. thank you.
1.A NULL value represents the absence of a value for a record in a field (others softwares call it also a missing value). 2.An empty value is a "field-formatted" value with no significant data in it. 3.NULL isn't allocated any memory, the string with NUll value is just a pointer … Read More
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