\begin{frame}{Entwurfsmuster}
	\begin{columns}
		\column{.5\textwidth}
		\begin{greenblock}{Dependency Injection}
			Standard (\texttt{block})
        \end{greenblock}
		\column{.5\textwidth}
		\begin{blueblock}{Data Access Object (DAO)}
			= \texttt{exampleblock}
        \end{blueblock}
	\end{columns}
\end{frame}