introduction.tex

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\section{Introduction}

\subsection{The SQL language}

The four most basic commands in SQL are:

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One specialty about the SQL language is, that you can work on the data as well as on structural components of the database with the same language.
To prevent confusion, data commands and structural directives are strictly separated.
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The commands given above are \blank. \medskip\par
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The four corresponding \blank are:

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