diff --git a/src/flask_covid19/blueprints/app_all/all_model.py b/src/flask_covid19/blueprints/app_all/all_model.py
index c62a7fb22b35de0dd61c280e89171b8c2b525768..cae81bf960e6f8a9d758e5d5db491bf6a73a9f5e 100644
--- a/src/flask_covid19/blueprints/app_all/all_model.py
+++ b/src/flask_covid19/blueprints/app_all/all_model.py
@@ -218,6 +218,10 @@ class BlueprintLocation(db.Model):
     __table_args__ = (
         db.UniqueConstraint('location', name='uix_blueprint_location'),
     )
+
+    def __str__(self):
+        return self.location_group.__str__() + " : " + self.location_code + " | " + self.location
+
     id = db.Column(db.Integer, primary_key=True)
     location_code = db.Column(db.String(255), unique=True, nullable=True)
     location = db.Column(db.String(255), nullable=False, unique=True)
diff --git a/src/flask_covid19/blueprints/data_divi/divi_model.py b/src/flask_covid19/blueprints/data_divi/divi_model.py
index 687a5ab75806ffdad281925396be21e95344205e..b3b9d2157251446b623ab29dfcef15b3513c13f2 100644
--- a/src/flask_covid19/blueprints/data_divi/divi_model.py
+++ b/src/flask_covid19/blueprints/data_divi/divi_model.py
@@ -54,9 +54,6 @@ class DiviCountry(BlueprintLocation):
         db.UniqueConstraint('location_code', 'location', name="uix_divi_country"),
     )
 
-    def __str__(self):
-        return self.location_group.__str__() + " : " + self.location_code + " | " + self.location
-
     id = db.Column(db.Integer, primary_key=True)
     location_code = db.Column(db.String(255), unique=True, nullable=True)
     location = db.Column(db.String(255), nullable=False, unique=True)
@@ -68,92 +65,33 @@ class DiviCountry(BlueprintLocation):
         order_by='DiviRegion.location_group')
     processed_update = db.Column(db.Boolean, nullable=False)
     processed_full_update = db.Column(db.Boolean, nullable=False)
-    #country_code = db.Column(db.String(255), unique=True, nullable=False)
-    #country = db.Column(db.String(255), unique=True, nullable=False)
-    #region_id = db.Column(db.Integer, db.ForeignKey('divi_country_region.id'), nullable=False)
-    #region = db.relationship(
-    #    'DiviRegion',
-    #    lazy='joined',
-    #    cascade='save-update',
-    #    order_by='DiviRegion.region')
-
-    @classmethod
-    def remove_all(cls):
-        for one in cls.get_all():
-            db.session.delete(one)
-        db.session.commit()
-        return None
-
-    @classmethod
-    def get_all_as_page(cls, page):
-        return db.session.query(cls)\
-            .order_by(cls.country)\
-            .paginate(page, per_page=ITEMS_PER_PAGE)
-
-    @classmethod
-    def get_all(cls):
-        return db.session.query(cls)\
-            .order_by(cls.country)\
-            .all()
-
-    @classmethod
-    def get_all_as_dict(cls):
-        countries = {}
-        for my_country in cls.get_all():
-            countries[my_country.country_code] = my_country
-        return countries
-
-    @classmethod
-    def get_by_id(cls, other_id):
-        return db.session.query(cls)\
-            .filter(cls.id == other_id)\
-            .one()
-
-    @classmethod
-    def get_germany(cls):
-        return db.session.query(cls)\
-            .filter(cls.country_code == 'DE')\
-            .one_or_none()
 
     @classmethod
-    def find_by_country_code_and_country_and_divi_region_id(cls, i_country_code, i_country, my_region):
+    def get_by(cls, location_code: str, location: str, location_group: DiviRegion):
         return db.session.query(cls).filter(
             and_(
-                cls.country_code == i_country_code,
-                cls.country == i_country,
-                cls.region_id == my_region.id
+                cls.location_code == location_code,
+                cls.location == location,
+                cls.location_group_id == location_group.id
             )
         ).one_or_none()
 
     @classmethod
-    def find_by_country_code(cls, i_country_code):
-        return db.session.query(cls).filter(
-            cls.country_code == i_country_code
-        ).one_or_none()
-
-    @classmethod
-    def find_by_country(cls, i_country):
+    def find_by(cls, location_code: str, location: str, location_group: DiviRegion):
         return db.session.query(cls).filter(
-            cls.country == i_country
+            and_(
+                cls.location_code == location_code,
+                cls.location == location,
+                cls.location_group_id == location_group.id
+            )
         ).one_or_none()
 
     @classmethod
-    def get_by_country_code(cls, i_country_code):
-        return db.session.query(cls).filter(
-            cls.country_code == i_country_code
-        ).one()
-
-    @classmethod
-    def get_by_country(cls, i_country):
-        return db.session.query(cls).filter(
-            cls.country == i_country
-        ).one()
-
-    @classmethod
-    def get_divi_countries_for_region(cls, region, page):
-        return db.session.query(cls).filter(
-            cls.region == region
-        ).order_by(cls.country).paginate(page, per_page=ITEMS_PER_PAGE)
+    def find_by_location_group(cls, location_group, page):
+        return db.session.query(cls)\
+            .filter(cls.location_group == location_group)\
+            .order_by(cls.location) \
+            .paginate(page, per_page=ITEMS_PER_PAGE)
 
 
 class DiviData(BlueprintFactTable):
@@ -182,44 +120,25 @@ class DiviData(BlueprintFactTable):
     deaths_cumulative = db.Column(db.Integer, nullable=False)
 
     @classmethod
-    def remove_all(cls):
-        for one in cls.get_all():
-            db.session.delete(one)
-        db.session.commit()
-        return None
-
-    @classmethod
-    def get_all_as_page(cls, page):
-        return db.session.query(cls).paginate(page, per_page=ITEMS_PER_PAGE)
-
-    @classmethod
-    def get_all(cls):
-        return db.session.query(cls).all()
-
-    @classmethod
-    def get_by_id(cls, other_id):
-        return db.session.query(cls).filter(cls.id == other_id).one()
-
-    @classmethod
-    def find_one_or_none_by_date_and_country(cls, my_date_reported, my_country):
+    def find_by_date_reported_and_location(cls, date_reported: DiviDateReported, location: DiviCountry):
         return db.session.query(cls).filter(
             and_(
-                cls.date_reported_id == my_date_reported.id,
-                cls.country_id == my_country.id
+                cls.date_reported_id == date_reported.id,
+                cls.location_id == location.id
             )
         ).one_or_none()
 
     @classmethod
-    def get_data_for_country(cls, divi_country, page):
+    def find_by_location(cls, location: DiviCountry, page):
         return db.session.query(cls).filter(
-            cls.country_id == divi_country.id
+            cls.location_id == location.id
         ).populate_existing().options(
             joinedload(cls.country).joinedload(DiviCountry.region),
             joinedload(cls.date_reported)
         ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_day(cls, date_reported, page):
+    def find_by_date_reported_paged(cls, date_reported: DiviDateReported, page):
         return db.session.query(cls).filter(
                 cls.date_reported_id == date_reported.id
             ).populate_existing().options(
@@ -233,7 +152,7 @@ class DiviData(BlueprintFactTable):
             ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_one_day(cls, date_reported):
+    def find_by_date_reported(cls, date_reported: DiviDateReported):
         return db.session.query(cls).filter(
             cls.date_reported_id == date_reported.id
         ).populate_existing().options(
@@ -247,14 +166,14 @@ class DiviData(BlueprintFactTable):
         ).all()
 
     @classmethod
-    def delete_data_for_one_day(cls, date_reported):
-        for one_divi_date in cls.get_data_for_one_day(date_reported):
+    def delete_data_for_one_day(cls, date_reported: DiviDateReported):
+        for one_divi_date in cls.find_by_date_reported(date_reported):
             db.session.delete(one_divi_date)
             db.session.commit()
         return None
 
     @classmethod
-    def get_data_for_day_order_by_cases_new(cls, date_reported, page):
+    def find_by_date_reported_order_by_cases_new(cls, date_reported: DiviDateReported, page):
         return db.session.query(cls).filter(
                 cls.date_reported_id == date_reported.id
             ).populate_existing().options(
@@ -265,7 +184,7 @@ class DiviData(BlueprintFactTable):
             ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_day_order_by_cases_cumulative(cls, date_reported, page):
+    def find_by_date_reported_order_by_cases_cumulative(cls, date_reported: DiviDateReported, page):
         return db.session.query(cls).filter(
                 cls.date_reported_id == date_reported.id
             ).populate_existing().options(
@@ -276,7 +195,7 @@ class DiviData(BlueprintFactTable):
             ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_day_order_by_deaths_new(cls, date_reported, page):
+    def find_by_date_reported_order_by_deaths_new(cls, date_reported: DiviDateReported, page):
         return db.session.query(cls).filter(
                 cls.date_reported_id == date_reported.id
             ).populate_existing().options(
@@ -287,62 +206,62 @@ class DiviData(BlueprintFactTable):
             ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_day_order_by_deaths_cumulative(cls, date_reported, page):
+    def find_by_location_by_deaths_cumulative(cls, date_reported: DiviDateReported, page):
         return db.session.query(cls).filter(
                 cls.date_reported_id == date_reported.id
             ).populate_existing().options(
-                joinedload(cls.country).joinedload(DiviCountry.region),
+                joinedload(cls.location).joinedload(DiviCountry.location_group),
                 joinedload(cls.date_reported)
             ).order_by(
                 cls.deaths_cumulative.desc()
             ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_country_order_by_cases_new(cls, divi_country, page):
+    def find_by_location_order_by_cases_new(cls, location: DiviCountry, page):
         return db.session.query(cls).filter(
-            cls.country_id == divi_country.id
+            cls.location_id == location.id
         ).populate_existing().options(
-            joinedload(cls.country).joinedload(DiviCountry.region),
+            joinedload(cls.location).joinedload(DiviCountry.location_group),
             joinedload(cls.date_reported)
         ).order_by(
             cls.cases_new.desc()
         ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_country_order_by_cases_cumulative(cls, divi_country, page):
+    def find_by_location_order_by_cases_cumulative(cls, location: DiviCountry, page):
         return db.session.query(cls).filter(
-            cls.country_id == divi_country.id
+            cls.location_id == location.id
         ).populate_existing().options(
-            joinedload(cls.country).joinedload(DiviCountry.region),
+            joinedload(cls.location).joinedload(DiviCountry.location_group),
             joinedload(cls.date_reported)
         ).order_by(
             cls.cases_cumulative.desc()
         ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_country_order_by_deaths_new(cls, divi_country, page):
+    def find_by_location_order_by_deaths_new(cls, location: DiviCountry, page):
         return db.session.query(cls).filter(
-            cls.country_id == divi_country.id
+            cls.location_id == location.id
         ).populate_existing().options(
-            joinedload(cls.country).joinedload(DiviCountry.region),
+            joinedload(cls.location).joinedload(DiviCountry.location_group),
             joinedload(cls.date_reported)
         ).order_by(
             cls.deaths_new.desc()
         ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_data_for_country_order_by_deaths_cumulative(cls, divi_country, page):
+    def find_by_date_reported_order_by_deaths_cumulative(cls, location: DiviCountry, page):
         return db.session.query(cls).filter(
-            cls.country_id == divi_country.id
+            cls.location_id == location.id
         ).populate_existing().options(
-            joinedload(cls.country).joinedload(DiviCountry.region),
+            joinedload(cls.location).joinedload(DiviCountry.location_group),
             joinedload(cls.date_reported)
         ).order_by(
             cls.deaths_cumulative.desc()
         ).paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def get_datum_of_all_data(cls):
+    def get_date_reported(cls):
         datum_of_all_divi_data = []
         for data in db.session.query(cls).options(subqueryload("date_reported").load_only("datum")):
             datum = data.date_reported.datum.isoformat()
@@ -352,5 +271,5 @@ class DiviData(BlueprintFactTable):
         return datum_of_all_divi_data
 
     @classmethod
-    def get_joungest_datum(cls):
-        return cls.get_datum_of_all_divi_data().pop()
+    def get_joungest_date_reported(cls):
+        return cls.get_date_reported().pop()
diff --git a/src/flask_covid19/blueprints/data_ecdc/ecdc_model.py b/src/flask_covid19/blueprints/data_ecdc/ecdc_model.py
index 01c4240a415a440eab3ad472b900606b84458b53..37843414b6aedfbd9a59db32ee759c2e1d9ffe8f 100644
--- a/src/flask_covid19/blueprints/data_ecdc/ecdc_model.py
+++ b/src/flask_covid19/blueprints/data_ecdc/ecdc_model.py
@@ -83,34 +83,6 @@ class EcdcCountry(BlueprintLocation):
     pop_data_2019 = db.Column(db.String(255), nullable=False)
     geo_id = db.Column(db.String(255), nullable=False)
 
-    @classmethod
-    def remove_all(cls):
-        num_rows_deleted = 0
-        try:
-            num_rows_deleted = db.session.query(cls).delete()
-            db.session.commit()
-        except Exception:
-            db.session.rollback()
-        return num_rows_deleted
-
-    @classmethod
-    def get_all_as_page(cls, page):
-        return db.session.query(cls)\
-            .order_by(cls.countries_and_territories.asc())\
-            .paginate(page, per_page=ITEMS_PER_PAGE)
-
-    @classmethod
-    def get_all(cls):
-        return db.session.query(cls)\
-            .order_by(cls.countries_and_territories.asc())\
-            .all()
-
-    @classmethod
-    def get_by_id(cls, other_id: int):
-        return db.session.query(cls)\
-            .filter(cls.id == other_id)\
-            .one()
-
     @classmethod
     def find_by_id(cls, other_id: int):
         return db.session.query(cls)\
@@ -118,7 +90,7 @@ class EcdcCountry(BlueprintLocation):
             .one_or_none()
 
     @classmethod
-    def get_by(cls, location: str, geo_id: str, location_code: str):
+    def get_by(cls, location: str = '', geo_id: str = '', location_code: str = ''):
         return db.session.query(cls).filter(and_(
             (cls.location == location),
             (cls.geo_id == geo_id),
@@ -134,25 +106,11 @@ class EcdcCountry(BlueprintLocation):
         )).one_or_none()
 
     @classmethod
-    def get_by(cls, location: str = '', geo_id: str = '', location_code: str = ''):
-        return db.session.query(cls).filter(and_(
-            (cls.location == location),
-            (cls.geo_id == geo_id),
-            (cls.location_code == location_code)
-        )).one()
-
-    @classmethod
-    def find_by_continent(cls, continent: EcdcContinent, page: int):
+    def find_by_location_group(cls, location_group: EcdcContinent, page: int):
         return db.session.query(cls)\
-            .filter(cls.location_group_id == continent.id)\
+            .filter(cls.location_group_id == location_group.id)\
             .paginate(page, per_page=ITEMS_PER_PAGE)
 
-    @classmethod
-    def get_germany(cls):
-        return db.session.query(cls) \
-            .filter(cls.location_code == 'DEU') \
-            .one()
-
     @classmethod
     def find_germany(cls):
         return db.session.query(cls) \
@@ -185,45 +143,36 @@ class EcdcData(BlueprintFactTable):
     cumulative_number_for_14_days_of_covid19_cases_per_100000 = db.Column(db.Float, nullable=False)
 
     @classmethod
-    def remove_all(cls):
-        num_rows_deleted = 0
-        try:
-            num_rows_deleted = db.session.query(cls).delete()
-            db.session.commit()
-        except Exception:
-            db.session.rollback()
-        return num_rows_deleted
-
-    @classmethod
-    def find_by_date_reported(cls, ecdc_datereported, page: int):
+    def find_by_date_reported(cls, date_reported: EcdcDateReported, page: int):
         return db.session.query(cls).filter(
-            cls.ecdc_datereported_id == ecdc_datereported.id)\
+            cls.date_reported_id == date_reported.id)\
             .order_by(cls.cumulative_number_for_14_days_of_covid19_cases_per_100000.desc())\
             .paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def find_by_date_reported_notification_rate(cls, ecdc_datereported, page: int):
+    def find_by_date_reported_order_by_notification_rate(cls, date_reported: EcdcDateReported, page: int):
         return db.session.query(cls).filter(
-            cls.ecdc_datereported_id == ecdc_datereported.id) \
+            cls.date_reported_id == date_reported.id) \
             .order_by(cls.cumulative_number_for_14_days_of_covid19_cases_per_100000.desc()) \
             .paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def find_by_date_reported_deaths_weekly(cls, ecdc_datereported, page: int):
+    def find_by_date_reported_order_by_deaths_weekly(cls, date_reported: EcdcDateReported, page: int):
         return db.session.query(cls).filter(
-            cls.ecdc_datereported_id == ecdc_datereported.id) \
+            cls.date_reported_id == date_reported.id) \
             .order_by(cls.deaths.desc()) \
             .paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def find_by_date_reported_cases_weekly(cls, ecdc_datereported, page: int):
+    def find_by_date_reported_order_by_cases_weekly(cls, date_reported: EcdcDateReported, page: int):
         return db.session.query(cls).filter(
-            cls.ecdc_datereported_id == ecdc_datereported.id) \
+            cls.date_reported_id == date_reported.id) \
             .order_by(cls.cases.desc()) \
             .paginate(page, per_page=ITEMS_PER_PAGE)
 
     @classmethod
-    def find_by_country(cls, ecdc_country, page: int):
+    def find_by_location(cls, location: EcdcCountry, page: int):
         return db.session.query(cls).filter(
-            cls.ecdc_country_id == ecdc_country.id) \
+            cls.location_id == location.id) \
+            .order_by(cls.date_reported.desc()) \
             .paginate(page, per_page=ITEMS_PER_PAGE)