diff --git a/EXOS/Exam2020.tex b/EXOS/Exam2020.tex
index 3342154..193f9dd 100644
--- a/EXOS/Exam2020.tex
+++ b/EXOS/Exam2020.tex
@@ -17,6 +17,11 @@
 %\usepackage{times}
 \usepackage{tikz,pgflibraryarrows,pgffor,pgflibrarysnakes}
 \usetikzlibrary{decorations.pathreplacing}
+\usetikzlibrary{calc}
+
+\usepackage[bf]{caption}
+
+\usepackage{tcolorbox}
 
 \usepackage{pdfpages}
 
@@ -51,6 +56,7 @@
 
 \usepackage{amsmath}
 \usepackage{amsthm}
+\usetikzlibrary{fit}
 
 
 
@@ -141,23 +147,100 @@ MCD de l’application :
 \begin{center}
      	   \begin{tikzpicture}[every node/.style={inner sep=0,outer sep=0}]
 
-\node (i) at (5,3) {\begin{varwidth}{1.5in}
-\begin{tabular}{|l|}
-\hline
-\rowcolor{Gray}EQUIPEMENT\\
+             \node (equip) at (3,3) {
+               \begin{varwidth}{1.5in}
+ \begin{tabular}{|l|}
+   \hline
+   \rowcolor{lightgray}EQUIPEMENT\\
 \hline
 \underline{idEquipement}\\
 Libell\'e\\
-Tarif\\ \hline
+Tarif\\
+\hline
+ \end{tabular}
+\end{varwidth}
+};
+
+      \node (con) at (7,3) {
+               \begin{varwidth}{1.5in}
+ \begin{tabular}{l}
+\rowcolor{Gray}contenir\\
+\hline
+nombre\\
 \end{tabular}
 \end{varwidth}
 };
+\draw[rounded corners] ($(con.north west)-(0.03,-0.03)$) rectangle ($(con.south east)+(-0.03,0.03)$);
 
 
-\node (w) at (5,-1) {\begin{varwidth}{1.5in}
+
+      \node (faire) at (10,0) {
+               \begin{varwidth}{1.5in}
+ \begin{tabular}{l}
+\rowcolor{Gray}Faire\\
+\hline
+~ \\
+\end{tabular}
+\end{varwidth}
+};
+\draw[rounded corners] ($(faire.north west)-(0.03,-0.03)$) rectangle ($(faire.south east)+(-0.03,0.03)$);
+
+
+
+
+      \node (DFres) at (13,-3) {
+               \begin{varwidth}{1.5in}
+ \begin{tabular}{l}
+\rowcolor{Gray}DF\_reserver\\
+\hline
+~ \\
+\end{tabular}
+\end{varwidth}
+};
+\draw[rounded corners] ($(DFres.north west)-(0.03,-0.03)$) rectangle ($(DFres.south east)+(-0.03,0.03)$);
+
+
+
+      \node (DFpra) at (-1,-3) {
+               \begin{varwidth}{1.5in}
+ \begin{tabular}{l}
+\rowcolor{Gray}DF\_pratiquer\\
+\hline
+~ \\
+\end{tabular}
+\end{varwidth}
+};
+\draw[rounded corners] ($(DFpra.north west)-(0.03,-0.03)$) rectangle ($(DFpra.south east)+(-0.03,0.03)$);
+
+
+
+      \node (fact) at (7,-3) {
+               \begin{varwidth}{1.5in}
+ \begin{tabular}{l}
+\rowcolor{Gray}facturer\\
+\hline
+tarifHoraire \\
+\end{tabular}
+\end{varwidth}
+};
+\draw[rounded corners] ($(fact.north west)-(0.03,-0.03)$) rectangle ($(fact.south east)+(-0.03,0.03)$);
+
+   \node (DFcon) at (3,0) {
+               \begin{varwidth}{1.5in}
+ \begin{tabular}{l}
+\rowcolor{Gray}DF\_concerner\\
+\hline
+~ \\
+\end{tabular}
+\end{varwidth}
+};
+\draw[rounded corners] ($(DFcon.north west)-(0.03,-0.03)$) rectangle ($(DFcon.south east)+(-0.03,0.03)$);
+
+
+\node (res) at (7,0) {\begin{varwidth}{1.5in}
 \begin{tabular}{|l|}
 \hline
-\rowcolor{Gray}RESERVATION\\
+\rowcolor{lightgray}RESERVATION\\
 \hline
 \underline{idReservation}\\
 dateReserv\\
@@ -168,10 +251,10 @@ nbJoueurs\\ \hline
 
 
 
-\node (a) at (0,0) {\begin{varwidth}{2.5in}
+\node (ter) at (-1,0) {\begin{varwidth}{2.5in}
 \begin{tabular}{|l|}
 \hline
-\rowcolor{Gray}TERRAIN\\
+\rowcolor{lightgray}TERRAIN\\
 \hline
 \underline{idTerrain}\\
 numTerrain\\
@@ -181,10 +264,10 @@ numTerrain\\
 };
 
 
-\node (f) at (8,-5) {\begin{varwidth}{2.5in}
+\node (cre) at (10,-3) {\begin{varwidth}{2.5in}
 \begin{tabular}{|l|}
 \hline
-\rowcolor{Gray}CRENEAU\\
+\rowcolor{lightgray}CRENEAU\\
 \hline
 \underline{numCreneau}\\
 heureD\'ebut\\
@@ -193,9 +276,9 @@ heureD\'ebut\\
 \end{varwidth}
 };
 
-\node[draw,rectangle] (g) at (0,-5) {\begin{varwidth}{2in}
+\node[draw,rectangle] (g) at (3,-3) {\begin{varwidth}{2in}
 \begin{tabular}{l}
- \rowcolor{Gray}SPORT\\
+ \rowcolor{lightgray}SPORT\\
   \hline
   \underline{nomSport}\\
   nbMinJoueurs\\
@@ -206,10 +289,10 @@ heureD\'ebut\\
 
 
 
-\node[draw,rectangle] (c) at (11,0) {
+\node[draw,rectangle] (c) at (13,0) {
 \begin{tabular}{|l|}
   \hline
-  \rowcolor{Gray}JOUEUR\\
+  \rowcolor{lightgray}JOUEUR\\
 \hline
 \underline{idjoueur}\\
 Nom\\
@@ -219,11 +302,20 @@ num\'ero\\
 \end{tabular}
 };
 
-\draw[-latex]  (i) --  (a);
-\draw[-latex]  (i) -- (c);
-\draw[latex-] (c) -- (f);
-\draw[latex-] (f) -- (g);
-\draw[latex-] (a) -- (g);
+\draw (equip) --  (con);
+\draw (res) --  (con);
+\draw (faire) -- (c);
+\draw (res) -- (faire);
+\draw (res) -- (DFres);
+\draw (cre) -- (DFres);
+\draw (cre) -- (fact);
+\draw (fact) -- (g);
+\draw (g) -- (DFpra);
+\draw (ter) -- (DFpra);
+\draw (ter) -- (DFcon);
+\draw (res) -- (DFcon);
+
+
 
            \end{tikzpicture}
 \end{center}