We have an application written in Gupta. The main table is called CLIENT (all unique Client_ID), the Client table is linked to other tables one of them is the RESULTS table and this table contains episodes for each client. We found that 4 CLIENTS have been deleted from the CLIENT table but still all the episodes and other information appears in the others tables. To delete a client you have to delete first the information in the Many side otherwise you cannot remove any clients if they have data in the linked tables. The question is How those clients were deleted/removed from the Client table without any track? is Gupta reliable? is possible that the behaviour of some keys or functions are not working properly? Thanks