diff --git a/pyodmongo/models/db_field_info.py b/pyodmongo/models/db_field_info.py
index 95440bd..8754b02 100644
--- a/pyodmongo/models/db_field_info.py
+++ b/pyodmongo/models/db_field_info.py
@@ -1,8 +1,9 @@
 from typing import Any
-from pydantic import BaseModel, ConfigDict
+from dataclasses import dataclass
 
 
-class DbField(BaseModel):
+@dataclass
+class DbField:
     field_name: str = None
     field_alias: str = None
     path_str: str = None
@@ -10,4 +11,3 @@ class DbField(BaseModel):
     by_reference: bool = None
     is_list: bool = None
     has_model_fields: bool = None
-    model_config = ConfigDict(extra="allow")
diff --git a/pyodmongo/models/db_model.py b/pyodmongo/models/db_model.py
index edddde3..6561cf7 100644
--- a/pyodmongo/models/db_model.py
+++ b/pyodmongo/models/db_model.py
@@ -6,20 +6,28 @@
     resolve_indexes,
     resolve_class_fields_db_info,
     resolve_reference_pipeline,
+    resolve_db_fields,
 )
 from pydantic import BaseModel
 from pydantic._internal._model_construction import ModelMetaclass
 from typing_extensions import dataclass_transform
 from typing import ClassVar
+import copy
 
 
-@dataclass_transform()
+@dataclass_transform(kw_only_default=True)
 class DbMeta(ModelMetaclass):
-    def __new__(cls, name: str, bases: tuple, namespace: dict, **kwargs: Any) -> type:
+    def __new__(
+        cls, name: str, bases: tuple[Any], namespace: dict, **kwargs: Any
+    ) -> type:
         setattr(cls, "__pyodmongo_complete__", False)
         for base in bases:
             setattr(base, "__pyodmongo_complete__", False)
 
+        # TODO finish db_fields after ModelMetaclass
+        db_fields = copy.deepcopy(namespace.get("__annotations__"))
+        db_fields = resolve_db_fields(bases=bases, db_fields=db_fields)
+
         cls: BaseModel = ModelMetaclass.__new__(cls, name, bases, namespace, **kwargs)
 
         setattr(cls, "__pyodmongo_complete__", True)
diff --git a/pyodmongo/services/model_init.py b/pyodmongo/services/model_init.py
index ce45531..abccba2 100644
--- a/pyodmongo/services/model_init.py
+++ b/pyodmongo/services/model_init.py
@@ -188,3 +188,21 @@ def resolve_class_fields_db_info(cls: BaseModel):
             db_field_info=db_field_info, path=[path]
         )
         setattr(cls, field + "__pyodmongo", field_to_set)
+
+
+# TODO finish resolve_single_db_field
+def resolve_single_db_field(value: Any) -> DbField:
+    by_reference = False
+    return value
+
+
+def resolve_db_fields(bases: tuple[Any], db_fields: dict):
+    for base in bases:
+        if base is object:
+            continue
+        base_annotations = base.__dict__.get("__annotations__")
+        for base_field, value in base_annotations.items():
+            if base_field not in db_fields.keys() and not base_field.startswith("_"):
+                db_fields[base_field] = resolve_single_db_field(value=value)
+        resolve_db_fields(bases=base.__bases__, db_fields=db_fields)
+    return db_fields