diff --git a/src/scenario.cl b/src/scenario.cl
new file mode 100644
index 0000000..ebd0c7c
--- /dev/null
+++ b/src/scenario.cl
@@ -0,0 +1,33 @@
+(load "./dodb.cl")
+
+;
+; TEST SCENARIO
+;
+
+(defstruct vehicle name color)
+
+;(defparameter cars (db/new "vehicle" "./storage/cars/"))
+; to launch the tests in RAM
+(defparameter cars (db/new "vehicle" "/tmp/storage/cars/"))
+
+(db/add cars (make-vehicle :name "Corvet"       :color "Red"))
+(db/add cars (make-vehicle :name "Ferrari"      :color "Red"))
+(db/add cars (make-vehicle :name "Deudeuch"     :color "Beige"))
+(db/add cars (make-vehicle :name "BMW"          :color "Blue"))
+(db/add cars (make-vehicle :name "Suzuki Wagon" :color "Blue"))
+
+(db/new-index cars "name")
+(db/new-partition cars "color")
+
+
+(format t "~&~S~&" cars)
+
+(format t "db/get-by-index ~S~&" (db/get-by-index cars "name" "Corvet"))
+(format t "db/get-by-partition red cars:~&")
+
+(loop for car in (db/get-by-partition cars "color" "Red")
+      do (format t "- ~S~&" car))
+
+(let ((suzuki (db/get-by-index cars "name" "Suzuki Wagon")))
+  (setf (vehicle-color (gethash suzuki (db-data cars))) "White")
+  (db/update cars suzuki))