  In this paper, we propose a fresh perspective on argumentation semantics, to
view them as a relational database. It offers encapsulation of the underlying
argumentation graph, and allows us to understand argumentation semantics under
a single, relational perspective, leading to the concept of relational
argumentation semantics. This is a direction to understand argumentation
semantics through a common formal language. We show that many existing
semantics such as explanation semantics, multi-agent semantics, and more
typical semantics, that have been proposed for specific purposes, are
understood in the relational perspective.
