\newsection
\section{Systems}
\subsection{Query Optimization}
\input{parts/03_systems/00_query-optimization/00_intro.tex}
\input{parts/03_systems/00_query-optimization/01_search-space/00_basics.tex}
\input{parts/03_systems/00_query-optimization/01_search-space/01_rewriting-rules.tex}
\input{parts/03_systems/00_query-optimization/01_search-space/02_execution-model.tex}
\input{parts/03_systems/00_query-optimization/01_search-space/03_cost-model.tex}
\input{parts/03_systems/00_query-optimization/01_search-space/04_search.tex}

\newpage
\subsection{Database Engines}
\input{parts/03_systems/01_database-engines/00_memory/00_intro.tex}
% \input{parts/03_systems/01_database-engines/00_memory/}
% \input{parts/03_systems/01_database-engines/}

% \input{parts/03_systems/}