diff --git a/lib/nntp/tiny/db.py b/lib/nntp/tiny/db.py
index 7459772..fc96d49 100644
--- a/lib/nntp/tiny/db.py
+++ b/lib/nntp/tiny/db.py
@@ -7,7 +7,24 @@ class DatabaseOrder(enum.Enum):
     DESC    = 2
 
 class DatabaseTable():
-    pass
+    __slots__ = '__dirty__', '__dirty_columns__',
+
+    def __init__(self):
+        object.__setattr__(self, '__dirty__',         False)
+        object.__setattr__(self, '__dirty_columns__', dict())
+
+    def __reset__(self):
+        object.__setattr__(self, '__dirty__', False)
+        object.__setattr__(self, '__dirty_columns__', {k: 0 for k in self.columns})
+
+    def __setattr__(self, k, v):
+        object.__setattr__(self, k, v)
+
+        values = object.__getattribute__(self, '__dirty_columns__')
+
+        if k in values:
+            object.__setattr__(self, '__dirty__', True)
+            values[k] += 1
 
 class DatabaseTableCursor():
     __slots__ = 'cr', 'table',
@@ -33,6 +50,8 @@ class DatabaseTableCursor():
             except IndexError:
                 setattr(obj, name, None)
 
+        obj.__reset__()
+
         return obj
 
     def fetchone(self):