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[DMDB] Completed normal forms, start query optimization

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janishutz
2026-06-30 16:21:35 +02:00
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semester4/dmdb/parts/00_relational-model_logic/01_algebra/00_operators.tex
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\label{sec:relational-algebra}
\subsubsection{Operators}
\begin{itemize}
\item \bi{Union} $\cup$: $x \in R_1 \cup R_2 \Leftrightarrow x \in R_1 \lor x \in R_2$