Full Idea
In the classical or realist view of logic the meaning of abstract symbols for logical connectives is given by the truth-tables for the symbol.
Gist of Idea
In classical/realist logic the connectives are defined by truth-tables
Source
Michèle Friend (Introducing the Philosophy of Mathematics [2007])
Book Reference
Friend,Michèle: 'Introducing the Philosophy of Mathematics' [Acumen 2007], p.128
A Reaction
Presumably this is realist because it connects them to 'truth', but only if that involves a fairly 'realist' view of truth. You could, of course, translate 'true' and 'false' in the table to empty (formalist) symbols such a 0 and 1. Logic is electronics.