C# allows you to define two types of variables: value types and reference types. The value types hold actual values, while reference types hold references to values stored somewhere in memory.

Take advantage of nullable types ... no values' or 'null values' to value types when there is no value available The C# language provides support for two types of data: value types and reference ...

Alternatively, different programmers will value ... as relational tables, it just behaves that way in your code. If you value behavior over storage (as I do) then, I suppose, you might say that ...