https://en.wikipedia.org/wiki/Null
Computing. Null (SQL), a special marker and keyword in SQL indicating that something has no value. Null character, the zero-valued ASCII character, also designated by ...
www.thefreedictionary.com/null
null (nŭl) adj. 1. Having no legal force; invalid: render a contract null and void. 2. Of no consequence, effect, or value; insignificant. 3. Amounting to nothing ...
www.dictionary.com/browse/null
Null definition, without value, effect, consequence, or significance. See more.
www.merriam-webster.com/dictionary/null
English borrowed "null" from the Anglo-French nul, meaning "not any." That word, in turn, traces to the Latin word nullus, from ne-, meaning "not," and ullus, meaning ...
php.net/manual/en/language.types.null.php
NULL. The special NULL value represents a variable with no value. NULL is the only possible value of type null. A variable is considered to be null if:
https://msdn.microsoft.com/en-us/library/edakx9da.aspx
The null keyword is a literal that represents a null reference, one that does not refer to any object. null is the default value of reference-type variables.
www.w3schools.com/sql/sql_null_values.asp
SQL NULL Values. If a column in a table is optional, we can insert a new record or update an existing record without adding a value to this column.
https://technet.microsoft.com/en-us/library/ms191504(v=sql.105).aspx
When null values are present in data, logical and comparison operators can potentially return a third result of UNKNOWN instead of just TRUE or FALSE.
https://developer.mozilla.org/.../Reference/Global_Objects/null
The value null represents the intentional absence of any object value. It is one of JavaScript's primitive values.
https://en.wikipedia.org/wiki/Null_(SQL)
Null is a special marker used in Structured Query Language (SQL) to indicate that a data value does not exist in the database. Introduced by the creator of the ...