MobiLink: How to propagade schema change for a synch profile to remote databases
Mobilink can also pass schemachanges to it's replicated databases.
For this, there exists the start synchronization schema change statement

This looks like this:

START SYNCHRONIZATION SCHEMA CHANGE
  FOR TABLES DBA.Sales, DBA.Products
  SET SCRIPT VERSION = 'version_2';
ALTER TABLE DBA.Sales ADD SUBTOTAL NUMERIC (10,2);
ALTER TABLE DBA.Products ALTER QUANTITY BIGINT;
STOP SYNCHRONIZATION SCHEMA CHANGE;