diff --git a/BDD.drawio b/BDD.drawio
new file mode 100644
index 0000000000000000000000000000000000000000..35164bcb8ca0b297de415da25c53254c64c4b2b8
--- /dev/null
+++ b/BDD.drawio
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/BDD.png b/BDD.png
new file mode 100644
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Binary files /dev/null and b/BDD.png differ