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\begin{frame}
  \frametitle{Attributes}
  
  \begin{exampleblock}{}
    \begin{center}
      \scalebox{.92}{
      \begin{tikzpicture}[every edge/.style={link}]
        \node[entity] (customer) {customer};
        \node[attribute] (id) [at=(customer),shift={(-2.5cm,0cm)}] {\key{id}} edge (customer);
        \node[attribute] (name) [at=(customer),shift={(-1.5cm,1.5cm)}] {name} edge (customer);
          \node[attribute] (first-name) [at=(name),shift={(-2cm,1cm)}] {first-name} edge (name);
          \node[attribute] (middle-initial) [at=(name),shift={(0cm,2cm)}] {middle-initial} edge (name);
          \node[attribute] (last-name) [at=(name),shift={(2cm,1cm)}] {last-name} edge (name);

        \node[attribute] (address) [at=(customer),shift={(3cm,0cm)}] {address} edge (customer);
          \node[attribute] (zip-code) [at=(address),shift={(2cm,-2cm)}] {zip-code} edge (address);
          \node[attribute] (state) [at=(address),shift={(2.3cm,-.9cm)}] {state} edge (address);
          \node[attribute] (city) [at=(address),shift={(2.35cm,.2cm)}] {city} edge (address);
          
          \node[attribute] (street) [at=(address),shift={(1cm,1.5cm)}] {street} edge (address);
            \node[attribute] (street-number) [at=(street),shift={(-1cm,2cm)}] {street-number} edge (street);
            \node[attribute] (street-name) [at=(street),shift={(1.1cm,1.2cm)}] {street-name} edge (street);

        \node[multi attribute] (phone-numbers) [at=(customer),shift={(-2.5cm,-1.5cm)}] {phone-numbers} edge (customer);
        \node[attribute] (date-of-birth) [at=(customer),shift={(0cm,-2.5cm)}] {date-of-birth} edge (customer);
        \node[derived attribute] (age) [at=(customer),shift={(2.5cm,-2cm)}] {age} edge (customer);
      \end{tikzpicture}}
    \end{center}
  \end{exampleblock}
  \pause 
  \begin{itemize}
    \item \textit{name}, \textit{address} and \textit{street} are composite attributes 
    \item \textit{phone numbers} is a multi-valued attribute
    \item \textit{age} is a derived attribute (derived from \textit{date-of-birth})
  \end{itemize}
\end{frame}