>**Puzzle 123.** Let \\(\mathcal{D}\\) be the free category on this graph:

>

>Again this can be used as a database schema. What does a database built using this schema amount to, in concrete terms?

If I did it correctly, it shoud be two tables,

\\[
\begin{array}{c|c}
\text{Germans} & \mathrm{FriendOf} \\\\
\hline
Adele & Sara\\\\
Bertram & Antonio \\\\
\vdots & \vdots \\\\
Siegmund & Teresa \\\\
Tyler & Bruno, \\\\
\vdots & \vdots
\end{array}
\quad
\begin{array}{c|c}
\text{Italians} & \mathrm{FriendOf}' \\\\
\hline
Antonio & Bertram \\\\
Bruno & Bertram \\\\
\vdots & \vdots \\\\
Sara & Adele \\\\
Teresa & Siegmund. \\\\
\vdots & \vdots
\end{array}
\\]