On Mar 8, 2017, at 2:00 PM, David Samson wrote: > One problem I came up against with external data files is that they are not > multi user i.e. one user accessing it locks all other users out. I am on > v14 so things might have changed.
But if you have the external database “served" from 4D Server, then it has shared access among 4D Client users. 4D Server will handle multiple users trying to access it at the same time by queueing the requests. It might allow simultaneous access for some operations but I’m not sure of that. All access needs to come from triggers on 4D Server, Stored Procedures, or from methods executed on the client if they have the “Execute on server” property selected. Tim ******************************************** Tim Nevels Innovative Solutions 785-749-3444 [email protected] ******************************************** ********************************************************************** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************
