I just started using TikZ an it's amazing. But I can't find out how to change the position of the label inside a node. At the moment I've:
\node (DataAccess) at (0,2) [draw,thick,minimum width=8cm,minimum height=2cm,
align=center, rounded corners] {Datenzugriff};
But I'd like to have the text in the upper center (but inside) of the rectangle. Any idea?
