Null was introduced by E. F. Codd as a method of representing missing data in the relational model.
Codd later reinforced his requirement that all RDBMS support Null to indicate missing data in a two-part series published in ComputerWorld magazine. Codd also introduced a ternary (three-valued) logic, consisting of the truth values True, False, and Unknown, which is closely tied to the concept of Null. The Unknown truth value is generated whenever Null is compared with any data value, or with another Null.
Può la condizione umana essere comparata ad una Null Condition?
NULL CONDITION a movie by CODECZOMBIE ©2011
Featuring: Michele “EGG” Papetti
Sound Design: Mirko Fabbri
Original Score: Wang inc.
Production Assistant: Caterina Viganò
Post Production: aseptic404
Location Manager: Gabriele Galli
Special Thanks: Yuri Ancarani, Alessandro Pautasso, Michele Lugaresi,
Cristina Onofri, Leonard Krone, Filippo Papetti
Filmed in Ravenna (Italia)
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