% \begin{frame}
%   \frametitle{How to Determine Keys}
% 
%   \begin{quiz}{\textwidth}{Finding all minimal keys}
%     Find \emph{all} minimal keys the relation $\sql{R}$
%     \begin{center}
%       {\ttfamily\centering
%         \colorbox{rellight}{%
%           \begin{tabular}[t]{|r|r|r|r|r|}
%             \multicolumn{5}{c}{R} \\ \hline
%             \hd{A} & \hd{B} & \hd{C} & \hd{D} & \hd{E} \\
%             \hline
%           \end{tabular}%
%         }}
%     \end{center}
%     with the functional dependencies
%     \begin{align*}
%       \sql{A}, \sql{D} &\to \sql{B},\sql{D} \\
%       \sql{B}, \sql{D} &\to \sql{C} \\
%       \sql{A} &\to \sql{E} \\
%       \sql{C}, \sql{D}, \sql{E} &\to \sql{A}
%     \end{align*}
%     using the algorithm on the previous slide.
%   \end{quiz}
% \end{frame}

% \overview{2}
\theme{Consequence of Bad Design}