\documentclass{report}

\def\papertitle{Information Systems for Engineers}

\def\theorytitle{Theory}
\def\corollarytitle{Corollary}
\def\proposaltitle{Proposal}
\def\claimtitle{Claim}
\def\exercisetitle{Exercise}
\def\exampletitle{Example}
\def\questiontitle{Question}
\def\wrongctitle{Wrong Concept}
\def\pagetitle{Page}
\def\chaptertitle{Chapter}

\input{preamble}
\input{macros}
\input{letterfonts}

\title{\huge{\papertitle}}
\author{\huge{Jirayu Ruh}}
\date{}

\begin{document}

\maketitle
\newpage% or \cleardoublepage
% \pdfbookmark[<level>]{<title>}{<dest>}
\pdfbookmark[section]{\contentsname}{toc}
\tableofcontents
\pagebreak

\input{disclaimer.tex}

\input{sections/introduction.tex}
\input{sections/relational_model.tex}
\input{sections/data_definition_sql.tex}
\input{sections/relational_algebra.tex}
\input{sections/queries_with_sql.tex}
\input{sections/database_design_theory.tex}
\input{sections/transactions_three_tiers.tex}
\input{sections/views_indecies.tex}
\input{sections/data_cubes.tex}
\input{sections/database_architecture.tex}

\end{document}