diff --git a/MonetDB.py b/MonetDB.py
index 95ab535..10be8f4 100644
--- a/MonetDB.py
+++ b/MonetDB.py
@@ -65,6 +65,8 @@ def connect_monetdb():
     return connection, cursor
 
 def create_table_monetdb():
+    start_time = 0
+    end_time = 0
     try:
         connect = connect_monetdb()
         with connect[0] as conn:
@@ -82,6 +84,8 @@ def create_table_monetdb():
     return end_time-start_time
 
 def load_data_monetdb():
+    start_time = 0
+    end_time = 0
     try:
         connect = connect_monetdb()
         with connect[0] as conn:
@@ -99,6 +103,8 @@ def load_data_monetdb():
     return end_time-start_time
 
 def requete_monetdb(str):
+    start_time = 0
+    end_time = 0
     try:
         connect=connect_monetdb()
         with connect[0] as conn:
@@ -114,6 +120,8 @@ def requete_monetdb(str):
     return end_time-start_time
 
 def reset_data_monetdb():
+    start_time = 0
+    end_time = 0
     try:
         connect = connect_monetdb()
         with connect[0] as conn:
diff --git a/main.py b/main.py
index c2eae2c..cef9445 100644
--- a/main.py
+++ b/main.py
@@ -43,9 +43,8 @@ def initMonetDB():
     time = create_table_monetdb()
     print("[MonetDB] create table: time = ", time, "s\n")
 
-    start_time = time.time()
-    load_data_monetdb()
-    end_time = time.time()
+    time = load_data_monetdb()
+
     print("[MonetDB] load data : time = ", time, "s\n")
 
 def execMonetDB(str):
@@ -86,16 +85,16 @@ def initPostgreSQL():
 
 def execPostgreSQL(str):
     start_time = time.time()
-    requete_monetdb(str)
+    requete_postgres(str)
     end_time = time.time()
     return end_time-start_time
 
 def runPostgreSQL():
-    execForMonetDB(5,[requeteSelect1PostgreSQL])
-    execForMonetDB(5,[requeteSelect2PostgreSQL])
-    execForMonetDB(5,[requeteSelect3PostgreSQL])
-    execForMonetDB(5,[requeteSelect4PostgreSQL])
-    execForMonetDB(5,[requeteCreateTable10PostgreSQL,requeteDeletePostgreSQL,requeteInsertPostgreSQL,requeteDropflight10MonetSQL])
+    execForPostgreSQL(5,[requeteSelect1PostgreSQL])
+    execForPostgreSQL(5,[requeteSelect2PostgreSQL])
+    execForPostgreSQL(5,[requeteSelect3PostgreSQL])
+    execForPostgreSQL(5,[requeteSelect4PostgreSQL])
+    execForPostgreSQL(5,[requeteCreateTable10PostgreSQL,requeteDeletePostgreSQL,requeteInsertPostgreSQL,requeteDropflight10MonetSQL])
 
 # execute n fois les n requêtes
 def execForPostgreSQL(n, tabReq):