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diff --git a/development/pim/dbpaper/intro.tex b/development/pim/dbpaper/intro.tex
index c456333..fd790d7 100644
--- a/development/pim/dbpaper/intro.tex
+++ b/development/pim/dbpaper/intro.tex
@@ -11,9 +11,9 @@ Design goal is a fast and extendable layout on a sql database to support cross r
\subsection{Copyright}
Copyright notice
-\copyright 2002, Maximilian Rei{\ss} \& Stefan Eilers \& Holger Freyther
+\copyright 2002-2004, Maximilian Rei{\ss} \& Stefan Eilers \& Holger Freyther
\pagebreak
\section{Relations}
\subsection{About Cross Referencing and Horizontal Data Storage}
@@ -21,9 +21,9 @@ Before you read on, it may be helpful to get some information about the solution
Some of the tables are just using 5 attributes:
\begin{enumerate}
\item UID: This countains an unique ID for the complete entry. An entry may consist of multiple
rows, seperated by ID.
-\item ID: This defines a number to seperate the rows of an entry. UID + ID must be unique for every entry.
+\item ID: This defines a number to seperate the rows of an entry. UID + ID must be unique for every entry (primary key).
\item Type: Describes the type of this entry.
\item Priority: For instance: Your default email-address will get the priority 1 and the other 2.. . 0 means ``not defined''.
\item Value: The data which was described by ``Type'' is stored here.
\end{enumerate}