diff --git a/DataSource/MySQL/leapidatasource.py b/DataSource/MySQL/leapidatasource.py
index 75d8788..e78bbfb 100644
--- a/DataSource/MySQL/leapidatasource.py
+++ b/DataSource/MySQL/leapidatasource.py
@@ -13,7 +13,7 @@ from mosql.query import select, insert, update, delete, join, left_join
 from mosql.util import raw, or_
 import mosql.mysql
 
-from DataSource.dummy.leapidatasource import DummyDatasource
+import DataSource.dummy.leapidatasource
 from DataSource.MySQL import utils
 from EditorialModel.classtypes import EmNature
 from EditorialModel.fieldtypes.generic import MultiValueFieldType
@@ -22,18 +22,14 @@ from Lodel.settings import Settings
 from .fieldtypes import fieldtype_cast
 
 ## MySQL DataSource for LeObject
-class LeDataSourceSQL(DummyDatasource):
+class LeapiDataSource(DataSource.dummy.leapidatasource.LeapiDataSource):
 
     RELATIONS_POSITIONS_FIELDS = {REL_SUP: 'superior_id', REL_SUB: 'subordinate_id'}
 
-    def __init__(self, module=pymysql, conn_args=None):
-        super(LeDataSourceSQL, self).__init__()
+    def __init__(self, module = pymysql, **kwargs):
+        super().__init__()
         self.module = module
-        if conn_args is None:
-            conn_args = copy.copy(Settings.get('datasource')['default'])
-            self.module = conn_args['module']
-            del conn_args['module']
-        self.connection = Database(self.module, **conn_args)
+        self.connection = Database(self.module, **kwargs)
 
     ## @brief select lodel editorial components using given filters
     # @param target_cls LeCrud(class): The component class concerned by the select (a LeCrud child class (not instance !) )
diff --git a/DataSource/MySQL/migrationhandler.py b/DataSource/MySQL/migrationhandler.py
index 032afcd..95233d6 100644
--- a/DataSource/MySQL/migrationhandler.py
+++ b/DataSource/MySQL/migrationhandler.py
@@ -13,7 +13,7 @@ from EditorialModel.fieldtypes.generic import MultiValueFieldType
 
 from DataSource.MySQL import fieldtypes as fieldtypes_utils
 from DataSource.MySQL import utils
-from DataSource.dummy.migrationhandler import DummyMigrationHandler
+import DataSource.dummy
 
 # The global MH algorithm is as follow :
 # A create_table(table_name, pk_name, pk_opt) method that create a table
@@ -41,7 +41,7 @@ from DataSource.dummy.migrationhandler import DummyMigrationHandler
 
 
 ## @brief Modify a MySQL database given editorial model changes
-class MysqlMigrationHandler(DummyMigrationHandler):
+class MigrationHandler(DataSource.dummy.MigrationHandler):
 
     ## @brief Construct a MysqlMigrationHandler
     # @param module : sql module
diff --git a/DataSource/MySQL/test/test_datasource.py b/DataSource/MySQL/test/test_datasource.py
index ab2b301..ee17d7b 100644
--- a/DataSource/MySQL/test/test_datasource.py
+++ b/DataSource/MySQL/test/test_datasource.py
@@ -19,7 +19,7 @@ import leapi.test.utils #Code generation functions
 
 from Lodel.settings import Settings
 import DataSource.MySQL
-from DataSource.MySQL.leapidatasource import LeDataSourceSQL as DataSource
+from DataSource.MySQL.leapidatasource import LeapiDataSource as DataSource
 import DataSource.MySQL.utils as db_utils
 from EditorialModel.classtypes import common_fields, relations_common_fields
 from EditorialModel.fieldtypes.generic import MultiValueFieldType
@@ -38,23 +38,12 @@ class DataSourceTestCase(TestCase):
     def test_init(self):
         """ Test __init__ for datasource """
         with patch.object(mosql.db.Database, '__init__', return_value=None) as mock_db:
-            #Test __init__ without arguments
-            DataSource()
-            conn_args = Settings.get('datasource')['default']
-            db_module = conn_args['module']
-            del(conn_args['module'])
-            mock_db.assert_called_once_with(db_module, **conn_args)
-
-            mock_db.reset_mock()
             #test with arguments
             conn_args = { 'hello': 'world', 'answer': 42 }
-            DataSource(mosql, conn_args)
+            DataSource(mosql, **conn_args)
             mock_db.assert_called_once_with(mosql, **conn_args)
 
             mock_db.reset_mock()
-
-            DataSource(conn_args = conn_args)
-            mock_db.assert_called_once_with(pymysql, **conn_args)
     
     def test_insert_leobject(self):
         """ Test the insert method on LeObjects """
diff --git a/DataSource/dummy/leapidatasource.py b/DataSource/dummy/leapidatasource.py
index 5454080..04c2b0a 100644
--- a/DataSource/dummy/leapidatasource.py
+++ b/DataSource/dummy/leapidatasource.py
@@ -4,8 +4,11 @@
 #
 # This class has to be extended to apply to a real datasource
 # But it can be used as an empty and debug datasource
-class DummyDatasource(object):
-
+#
+# @todo Settings fetch/pass generalisation for datasources.
+class LeapiDataSource(object):
+    
+    ## @todo Settings fetch/pass generalisation for datasources.
     def __init__(self, module=None, *conn_args, **conn_kargs):
         self.module = module
         self.conn_args = conn_args
diff --git a/DataSource/dummy/migrationhandler.py b/DataSource/dummy/migrationhandler.py
index 2cdf9c0..4da17b7 100644
--- a/DataSource/dummy/migrationhandler.py
+++ b/DataSource/dummy/migrationhandler.py
@@ -8,7 +8,7 @@
 
 
 ## Manage Model changes
-class DummyMigrationHandler(object):
+class MigrationHandler(object):
 
     def __init__(self, debug=False):
         self.debug = debug
diff --git a/Lodel/settings_format.py b/Lodel/settings_format.py
index 6f184fb..c2cc531 100644
--- a/Lodel/settings_format.py
+++ b/Lodel/settings_format.py
@@ -10,8 +10,7 @@ MANDATORY = [
     'em_file',
     'dynamic_code_file',
     'ds_package',
-    'datasource',
-    'mh_classname',
+    'datasource_options',
     'migration_options',
     'base_path',
     'plugins',
diff --git a/settings.py b/settings.py
index 372592e..92eecea 100644
--- a/settings.py
+++ b/settings.py
@@ -12,6 +12,9 @@ debug_sql = False
 
 plugins = ['dummy', 'dummy_auth']
 
+ds_package = 'dummy'
+datasource_options = {}
+""" #example
 datasource = {
     'default': {
         'module':pymysql,
@@ -21,6 +24,7 @@ datasource = {
         'db': None,
     }
 }
+"""
 
 migration_options = {
     'dryrun': False,