\newsection
\section{Relational Model, Logic \& Algebra}
\subsection{Relational Model}
\input{parts/00_relational-model_logic/00_model/00_intro.tex}
\input{parts/00_relational-model_logic/00_model/01_keys.tex}
\input{parts/00_relational-model_logic/00_model/02_queries.tex}

\newpage
\subsection{Relational Algebra}
\input{parts/00_relational-model_logic/01_algebra/00_operators.tex}
% \input{parts/00_relational-model_logic/}