Nullwerts
Nullwerts is a term used in German-speaking contexts to denote a null value, the absence of a known or applicable value in data. It is used in databases, programming, and mathematical contexts. A null value is not the same as zero, an empty string, or a false boolean; it signifies unknown or missing information.
In relational databases, NULL is the standard marker for a missing value. SQL uses a three-valued logic
In programming languages, null references can lead to runtime errors known as null dereferences. Many languages
In mathematics, the idea of a missing or undefined value overlaps with, but is not identical to,
Handling Nullwerts is a central concern in data quality and analysis, influencing data cleaning, reporting, and