Remco Tukker
--- a/compendium_v2/db/model.py
+++ b/compendium_v2/db/model.py
 str128_pk = Annotated[str, mapped_column(String(128), primary_key=True)]
 str256_pk = Annotated[str, mapped_column(String(256), primary_key=True)]
 int_pk = Annotated[int, mapped_column(primary_key=True)]
 int_pk_fkNREN = Annotated[int, mapped_column(ForeignKey("nren.id"), primary_key=True)]
+user_category_pk = Annotated[UserCategory, mapped_column(primary_key=True)]
+json_str_list = Annotated[List[str], mapped_column(JSON)]
+
+ExternalConnection = TypedDict(
+    'ExternalConnection',
+    {
+        'link_name': str,
+        'capacity': Optional[Decimal],
+        'from_organization': str,
+        'to_organization': str,
+        'interconnection_method': Optional[ConnectionMethod]
+    }