LaTeX Forum

\documentclass[12pt]{scrartcl}
\usepackage[utf8]{inputenc}

\usepackage{tikz}
\usetikzlibrary{positioning}
\usetikzlibrary{arrows.meta}

\begin{document}
\begin{figure}[ht]
  \centering
  \begin{tikzpicture}[
    box/.style={rectangle,draw,minimum width=2.5cm,minimum height=3em},
    >={Latex[length=2mm]}
    ]
    \node[box](model){Model};
    \node[box,right=3cm of model](controller){Controller};
    \node[box,below=1.5cm of model.south east,anchor=north west](view){\textsf{View}};
    \begin{scope}[->,nodes={font=\footnotesize}]
      \draw(view) -| node[right,pos=.6]{enthält} (controller);
      \draw(controller) -- node[above]{aktualisiert} (model);
      \draw[dash dot dot](model) |- node[right,pos=.25]{benachrichtigt} ([yshift=1.5em]view);
      \draw([yshift=-1.5em]view) -| node[below]{fordert an} ([xshift=-2cm]model);
    \end{scope}
  \end{tikzpicture}
  \caption{test}
  \label{fig:test}
\end{figure}
\end{document}