%\documentclass{article}
%\def\xcolorversion{2.00}
%\def\xkeyvalversion{1.8}
%
%\usepackage[version=0.96]{pgf}
%\usepackage{tikz}
%\usetikzlibrary{arrows,shapes,shapes.arrows,snakes,backgrounds,positioning,shapes.multipart}
%\usepackage[latin1]{inputenc}
%\usepackage{verbatim}
%
%\begin{document}
%
%\begin{comment}
%:Title: Architecture QVT
%
%\end{comment}
%%[>=latex]
%
%
\begin{tikzpicture}[on grid, auto, node distance=2.5cm, scale=1.0, every text node part/.style={align=center}]

\node [name=r2c, 
       minimum width=4cm,
       minimum height=1cm,
       arrow box, 
       arrow box shaft width=0.5cm, 
%       arrow box head indent=0.1cm, 
%       arrow box head extend=0.1cm, 
       inner sep=0.125cm/2, % should be half shaft width
       draw,
       fill=green!30!yellow!70,
       arrow box arrows={south:0.5cm}] at (-1.0,0.0)
       {\textbf{RelationsToCore}\\\textbf{Transformation}};

\node[draw, 
      minimum height=3.5cm, 
      text width=2.5cm, 
      left of=r2c,
      fill=yellow!55,
      xshift=-3cm,
      yshift=-0.3cm] (opmappings){\large \textbf{Operational\\Mappings}};

\node[draw, 
      minimum height=1cm, 
      minimum width=5.5cm, 
      above of=r2c,
      fill=yellow!55,
      yshift=-1.5cm] (relations){\large \textbf{Relations}};

\node[draw, 
      minimum height=1cm, 
      minimum width=5.5cm, 
      below of=r2c,
      fill=yellow!55,
      yshift=0.98cm] (core){\large \textbf{Core}};

\node[draw, 
      minimum height=3.5cm, 
      text width=2.5cm, 
      right of=r2c, 
      fill=black,
      text=white,
      xshift=3cm,
      yshift=-0.3cm] (blackbox){\large \textbf{Black\\Box}};

%\path[->] (opmappings) edge (relations);
\draw[-triangle 60, thick] (opmappings)+(1.36,1.3) -- (relations) {};
%\path[->] (opmappings) edge (core);
\draw[-triangle 60, thick] (opmappings)+(1.36,-1.2) -- (core) {};

%\path[->] (blackbox) edge (relations);
\draw[-triangle 60, thick] (blackbox)+(-1.36,1.3) -- (relations) {};
%\path[->] (blackbox) edge (core);
\draw[-triangle 60, thick] (blackbox)+(-1.36,-1.2) -- (core) {};

\end{tikzpicture}
%
%\end{document}