Add another TODO.

diff --git a/doc/TODO b/doc/TODO
index ade7b4a23042ad41015bb0bba4ab4b876d5b84b9..d1df0274629acda10a6a1d0ebc1a64d13c53fed8 100644 (file)
--- a/doc/TODO
+++ b/doc/TODO
@@ -6,3 +6,7 @@
 
 3. Write a test for the ON DELETE CASCADE behavior which is supposed
    to be default but does not seem to work at the moment.
+
+4. Add top-level message tables for all types so that we can link all
+   records to a message and use the message's time stamp to (cascade)
+   delete old data.