You can define data fields to not store null data by specifying the NU option in data definition statements. In normal data storage (that is, NU not specified), a null value is represented by two ...

Err, sorry. Please try again. Null is the term used in computer systems the world over to indicate "no value." That's not the same as the number zero, mind you. It's more like telling the computer ...

His last name is Null, the same word used by computer scientists to mean “no value” or “invalid value.” The Nulls of the ...