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\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
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% Document Info
\author{williamow12}
\pdfinfo{
  /Title (dbm.pdf)
  /Creator (Cheatography)
  /Author (williamow12)
  /Subject (DBM Cheat Sheet)
}

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% Header and Footer
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\fancyhead{} % Set header to blank
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\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
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    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{DBM Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{williamow12} via \textcolor{DarkBackground}{\uline{cheatography.com/69238/cs/17452/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}williamow12 \\
  \uline{cheatography.com/williamow12} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 14th October, 2018.\\
   Updated 15th October, 2018.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
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% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{p{0.4977 cm} p{0.4977 cm} }
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{{\bf{Definitions 1}}}}  \tn
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\mymulticolumn{2}{x{5.377cm}}{{\bf{Generalization}} - the process of defining a more general entity type from a set of more specialized entity types \newline {\bf{Weak Entity type}} - an entity type whose existence depends on another entity type a \newline {\bf{Composite Key}} - is a set of more than one key that, together, uniquely identifies each record. \newline {\bf{Foreign  Key}} - is a key in some table which uniquely identifies rows in another table  \newline {\bf{The entity integrity rule}} - The primary key for a row is unique, and any primary key is not null}  \tn 
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{{\bf{Definitions Continued}}}}  \tn
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\mymulticolumn{2}{x{5.377cm}}{{\bf{Referential Integrity Constraint}} - each foreign key value must match a primary key value in the other relation  \newline {\bf{Meta-Data}} - Data that describes the properties of other data - ex. (rules or constraints,data definitions and structures) \newline {\bf{CASE}} - a class of tools that automates the design of databases and application programs. \newline {\bf{Insertion anomaly}} - when certain attributes cannot be inserted into the database without the presence of other attributes}  \tn 
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\mymulticolumn{1}{x{5.377cm}}{1. Metadata are data that describe the properties of other data - {\bf{True}} \newline 2. Redundancy increases the risk of inconsistent data - {\bf{True}} \newline 3. Cost and complexity are just two of the disadvantages of database processing - {\bf{True}} \newline 4. In an E-R diagram, strong entities are represented by double-walled rectangles - {\bf{False}} \newline 5. In an E-R diagram, an associative entity is represented by a rounded rectangle - {\bf{True}} \newline 6. A single occurrence of an entity is called an entity instance - {\bf{True}}}  \tn 
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\mymulticolumn{2}{x{5.377cm}}{7. An entity type name should always be a singular noun - {\bf{True}} \newline 8. A multivalued attribute may take on more than one value for a particular entity instance - {\bf{True}} \newline 9. A cardinality constraint tells what kinds of properties are associated with an entity - {\bf{False}} \newline 10. A member of a subtype does NOT necessarily have to be a member of the supertype - {\bf{False}} \newline 11. There are three separate discriminators in the following diagram because of the overlap rule - {\bf{True}}}  \tn 
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\mymulticolumn{2}{x{5.377cm}}{13. A composite key consists of only one attribute - {\bf{False}} \newline 14. A primary key is an attribute that uniquely identifies each row in a relation - {\bf{True}} \newline 15. The following figure is an example of total specialization - {\bf{False}} \newline 16. A foreign key is a primary key of a relation that also is a primary key in another relation - {\bf{False}} \newline 17. One property of a relation is that each attribute within a relation has a unique name - {\bf{True}}}  \tn 
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\mymulticolumn{2}{x{5.377cm}}{{\bf{Deletion anomaly}} - exists when certain attributes are lost because of the deletion of other attributes \newline {\bf{When a regular entity type contains a multivalued attribute, one must}} - create two new relations, one containing the multivalued attribute \newline {\bf{Transitive Dependency}} - A functional dependency between two or more non-key attributes \newline {\bf{Total Specialization}} - specifies that for each entity instance of the supertype must be a member of some subtype in the relationship}  \tn 
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\mymulticolumn{2}{x{5.377cm}}{18. There can be multivalued attributes in a relation - {\bf{False}} \newline 19. Unlike columns, the rows of a relation may not be interchanged and must be stored in one sequence - {\bf{False}} \newline 20. The allowable range of values for a given attribute is part of the domain constraint - {\bf{True}} \newline 21. A cascading delete removes all records in other tables associated with the record to be deleted - {\bf{True}} \newline 22. When transforming a one-to-one relationship, a new relation is always created - {\bf{False}}}  \tn 
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% That's all folks
\end{multicols*}

\end{document}