diff --git a/src/aki_prj23_transparenzregister/utils/postgres/connector.py b/src/aki_prj23_transparenzregister/utils/postgres/connector.py
index 15bde3e..487a529 100644
--- a/src/aki_prj23_transparenzregister/utils/postgres/connector.py
+++ b/src/aki_prj23_transparenzregister/utils/postgres/connector.py
@@ -25,11 +25,16 @@ def get_engine(conn_args: PostgreConnectionString):
     return create_engine(url)
 
 
-if __name__ == "__main__":
-    """Main flow creating tables"""
+def init_db():
+    """Initialize DB with all defined entities."""
     config_provider = JsonFileConfigProvider("./secrets.json")
     engine = get_engine(config_provider.get_postgre_connection_string())
-    with engine.connect() as connection:
-        Base = declarative_base()
+    with engine.connect():
+        base = declarative_base()
 
-        Base.metadata.create_all(engine)
+        base.metadata.create_all(engine)
+
+
+if __name__ == "__main__":
+    """Main flow creating tables"""
+    init_db()
diff --git a/src/aki_prj23_transparenzregister/utils/postgres/entities.py b/src/aki_prj23_transparenzregister/utils/postgres/entities.py
index e249f77..2729ec3 100644
--- a/src/aki_prj23_transparenzregister/utils/postgres/entities.py
+++ b/src/aki_prj23_transparenzregister/utils/postgres/entities.py
@@ -101,7 +101,9 @@ class Sentiment(Base):  # type: ignore
     company_hr = Column(Integer)
     company_court = Column(Integer)
     date = Column(DateTime(), default=datetime.now)
-    sentiment_type = Column(Enum(SentimentTypeEnum), nullable=False)
+    sentiment_type = Column(
+        Enum(SentimentTypeEnum), nullable=False
+    )  # type: SentimentTypeEnum
     value = Column(Float(), nullable=False)
     source = Column(String(100))
 
@@ -150,7 +152,7 @@ class PersonRelation(Base):  # type: ignore
     person_id = mapped_column(ForeignKey("person.id"))
     date_from = Column(DateTime(), default=datetime.now)
     date_to = Column(DateTime(), default=datetime.now)
-    relation = Column(Enum(RelationTypeEnum), nullable=False)
+    relation = Column(Enum(RelationTypeEnum), nullable=False)  # type: RelationTypeEnum
 
     # company = relationship("Company")
     # person = relationship("Person", foreign_keys=[person_id])
@@ -182,7 +184,9 @@ class CompanyRelation(Base):  # type: ignore
     company2_id = Column(Integer, nullable=False)
     date_from = Column(DateTime(), default=datetime.now)
     date_to = Column(DateTime(), default=datetime.now)
-    relation = Column(Enum(RelationTypeCompanyEnum), nullable=False)
+    relation = Column(
+        Enum(RelationTypeCompanyEnum), nullable=False
+    )  # type: RelationTypeCompanyEnum
 
     # company = relationship("Company")
 
diff --git a/tests/utils/postgres/connector_test.py b/tests/utils/postgres/connector_test.py
index 50a9c51..1e80985 100644
--- a/tests/utils/postgres/connector_test.py
+++ b/tests/utils/postgres/connector_test.py
@@ -1,7 +1,7 @@
-from unittest.mock import patch
+from unittest.mock import Mock, patch
 
 from aki_prj23_transparenzregister.config.config_template import PostgreConnectionString
-from aki_prj23_transparenzregister.utils.postgres.connector import get_engine
+from aki_prj23_transparenzregister.utils.postgres.connector import get_engine, init_db
 
 
 def test_get_engine():
@@ -12,3 +12,19 @@ def test_get_engine():
         result = "someThing"
         mock_create_engine.return_value = result
         assert get_engine(conn_args) == result
+
+
+def test_init_db():
+    with patch(
+        "aki_prj23_transparenzregister.utils.postgres.connector.get_engine"
+    ) as mock_get_engine, patch(
+        "aki_prj23_transparenzregister.utils.postgres.connector.declarative_base"
+    ) as mock_declarative_base:
+        mock_get_engine.connect.return_value = {}
+
+        mock_value = Mock()
+        mock_value.metadata.create_all.return_value = None
+        mock_declarative_base.return_value = mock_value
+
+        init_db()
+        assert True