strict digraph {
nodesep=1
splines=false
rankdir=LR

DOZENT [shape=rect style=rounded label=<
<table border="0" cellborder="0" cellpadding="0">
<tr><td align="center" cellpadding="5" colspan="2"
	>DOZENT</td></tr>
<tr><td>#</td><td align="left">Name</td></tr>
<tr><td>*</td><td align="left">Tel</td></tr>
</table>
>];

VORLESUNG [shape=rect style=rounded label=<
<table border="0" cellborder="0" cellpadding="0">
<tr><td align="center" cellpadding="5" colspan="2"
	>VORLESUNG</td></tr>
<tr><td>#</td><td align="left">Nr</td></tr>
<tr><td>*</td><td align="left">Titel</td></tr>
</table>
>];

{node[shape=point height=0 color=black] mitte }

DOZENT -> mitte [arrowhead=none style=dashed label="hält"]
mitte -> VORLESUNG [arrowhead=crow style=solid label="wird gehalten\nvon"]

}