diff --git a/master_data_nodes.md b/master_data_nodes.md
index c8aa15a..c209aa2 100644
--- a/master_data_nodes.md
+++ b/master_data_nodes.md
@@ -10,7 +10,11 @@ CREATE TABLE mast.node
 
 CREATE TABLE acct.accm
 (
-    id bigint PRIMARY KEY GENERATED BY DEFAULT
+    id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY 
     ,nam text
-    ,
+    --reference to node ids
+    --should be limited to certain types of nodes, like location, product line, fsline, perhaps an enum?
+    ,nodes bigint[]
+    --node attributes pooled here
+    ,doc jsonb
 )
\ No newline at end of file