\begin{frame}
  \frametitle{Motivation for Database Management Systems}
  
  \begin{goal}{Motivation for database management systems}
    \begin{itemize}
    \smallskip
    \item \emph{data independence}
      \begin{itemize}
        \item logical view on the data independent of physical storage
        \item user interacts with a simple view on the data
        \item behind the scenes (invisible for the user) are
        complex storage structures that allow rapid access and manipulation
      \end{itemize}
    \medskip
    \item \emph{avoidance of duplication}
        \begin{itemize}
          \item different views on the same database
            \begin{itemize}
              \item for different users or different applications
              \item hiding parts of the data for privacy or security
            \end{itemize}
        \end{itemize}
    \smallskip
    \end{itemize}
  \end{goal}
  \bigskip\pause
  
  This is achieved by the ANSI SPARC Architecture \ldots 
\end{frame}