Subject After insert or after update trigger
Author Raigo
Is there some way to create a trigger what works both after insert and
after update?
someting like:

CREATE TRIGGER MyTrigger FOR MyTable AFTER INSERT OR AFTER UPDATE
POSITION 0 AS
BEGIN

if (new.MyDateField='30.12.1899') then update MyTable set
MyDateField=null where ID=new.ID;

END