diff --git a/src/teilchensammler_cli/database.py b/src/teilchensammler_cli/database.py
new file mode 100644
index 0000000..fe3906a
--- /dev/null
+++ b/src/teilchensammler_cli/database.py
@@ -0,0 +1,8 @@
+from sqlmodel import SQLModel, create_engine
+
+sqlite_url = "sqlite:///:memory:"
+engine = create_engine(sqlite_url, echo=True)
+
+
+def create_db_and_tables():
+    SQLModel.metadata.create_all(engine)
diff --git a/src/teilchensammler_cli/models.py b/src/teilchensammler_cli/models.py
index 397733d..13e7dc2 100644
--- a/src/teilchensammler_cli/models.py
+++ b/src/teilchensammler_cli/models.py
@@ -3,8 +3,6 @@ import uuid
 from sqlmodel import (
     Field,
     SQLModel,
-    create_engine,
-    text,
 )
 
 
@@ -21,11 +19,5 @@ class Teilchen(TeilchenInput, table=True):
     number: int = Field(default=1)
 
 
-sqlite_url = "sqlite:///:memory:"
-engine = create_engine(sqlite_url, echo=True)
 
 
-def create_db_and_tables():
-    SQLModel.metadata.create_all(engine)
-    with engine.connect() as connection:
-        _ = connection.execute(text("PRAGMA foreign_keys=ON"))  # for sqlite only