diff --git a/COURS/BD.png b/COURS/BD.png
new file mode 100644
index 0000000..6af38e9
Binary files /dev/null and b/COURS/BD.png differ
diff --git a/COURS/PLSQL.tex b/COURS/PLSQL.tex
index 47c455a..b12a21d 100644
--- a/COURS/PLSQL.tex
+++ b/COURS/PLSQL.tex
@@ -320,7 +320,31 @@ Figure~\ref{fig:plsql1}.
 
 \begin{figure}[htb]
 \begin{center}
-  \includegraphics[width=12cm]{plsql2.png}
+
+\begin{tikzpicture}
+\node[draw] (a) at  (0,1)  {\begin{minipage}[h][2cm][t]{5cm} 
+Fichier de commandes SQL\\
+~\quad  SELECT ...\\
+~\quad  UPDATE ...\\
+~\quad  UPDATE ...\\
+  \end{minipage}
+};
+
+\draw[thick,-latex] (2.75,1.75) -- (7.75,1.75) node[midway,above] {SELECT ...};
+
+\draw[thick,-latex] (2.75,1) -- (7.75,1) node[midway,above] {UPDATE ...};
+
+\draw[thick,-latex] (2.75,.25) -- (7.75,.25) node[midway,above] {UPDATE ...};
+
+\node[draw] (b) at (10,1) {
+\begin{minipage}[h][2cm][t]{4cm} 
+\ \\
+\ \\
+\centering MOTER SQL\\
+  \end{minipage}
+};
+\end{tikzpicture}
+%  \includegraphics[width=12cm]{plsql2.png}
 \end{center}
 \caption{}\label{fig:plsql1}
 \end{figure}
@@ -331,8 +355,42 @@ sont transmis globalement au moteur SQL, comme le montre la
 Figure~\ref{fig:plsql2}.
 
 \begin{figure}[htb]
-\begin{center}
-  \includegraphics[width=12cm]{plsql1.png}
+  \begin{center}
+    
+\begin{tikzpicture}
+\node[draw] (a) at  (0,1)  {\begin{minipage}[h][3.25cm][t]{5cm} 
+Bloc PL/SQL\\
+Begin \\
+~~~~~~SELECT ...\\
+~\quad  If ... then\\
+~\quad UPDATE ...\\
+~\quad UPDATE ...\\
+~\quad End;\\
+  \end{minipage}
+};
+
+
+\draw[thick,-latex] (2.75,1) -- (7.75,1) node[midway,above] {
+  \begin{minipage}[h][1.22cm][t]{3cm}
+    begin \\
+    SELECT ...\\
+~\quad  If ... then\\
+~\quad UPDATE ...\\
+~\quad UPDATE ...\\
+~\quad End;\\
+  \end{minipage}
+};
+
+\node[draw] (b) at (10,1) {
+\begin{minipage}[h][3.25cm][t]{4cm} 
+\ \\
+\ \\
+\ \\
+\centering MOTER SQL\\
+  \end{minipage}
+};
+\end{tikzpicture}
+%  \includegraphics[width=12cm]{plsql1.png}
 \end{center}
 \caption{Interaction entre PL/SQL et SQL.}\label{fig:plsql2}
 \end{figure}
@@ -421,7 +479,48 @@ ligne attendant la suite de commande SQL.
 
 \begin{figure}[htb]
 \begin{center}
-  \includegraphics[width=12cm]{bloc.png}
+  \fbox{
+    \begin{minipage}[h][2cm][t]{15cm} 
+  \code{DECLARE} \\
+  D\'eclartion des variables locales au bloc, des constantes, des
+  execeptions, des cureurs.\\
+\  \\
+  (facultative)
+    \end{minipage}
+  }
+
+  \ \\
+  \ \\
+  
+  \fbox
+      {
+        \begin{minipage}[h][7.25cm][t]{15cm} 
+   \qquad     \fbox{
+    \begin{minipage}[h][3cm][t]{10cm} 
+  \code{BEGIN} \\
+  \ \\
+Instructions PL/SQL et SQL \\
+Possibilit\'es de blocs imbriqu\'es\\
+\  \\
+  (obligatoire)
+    \end{minipage}
+   }
+   
+   
+\qquad    \fbox{
+    \begin{minipage}[h][3cm][t]{10cm} 
+  \code{EXCEPTION} \\
+Traitements des erreurs, des cas particuliers\\
+\  \\
+  (facultative)
+    \end{minipage}
+   }
+\ \\
+
+   \code{END ;}
+\end{minipage}
+   }
+  %  \includegraphics[width=12cm]{bloc.png}
 \end{center}
 \caption{Structure d'un programme \plsql{}.}\label{fig:bloc}
 \end{figure}