Hi all, When I originally planned the schema used for our clinical application, I used horizontal inheritance. As use has increased, I perceive that horizontal inheritance will not scale for more and more entities. Perhaps I should spend time measuring the performance impact, but I am planning on ever increasing the number of child entities (they act as data collection forms) and so I think single-table inheritance is a better fit.
I have two questions. 1. Is there an easy way of migrating? I can see that I could set-up a wholly new type of entity / sub entities and then manually migrate old entity data into the new ones. This sounds like a considerable piece of work. 2. What happens in single-table inheritance if you have a clash of property names but the column name is different (or for that matter the same). Any advice much appreciated! Mark -- Dr. Mark Wardle Consultant Neurologist, University Hospital Wales, Cardiff, UK Email: [email protected] or [email protected] Twitter: @mwardle Telephone: 02920745274 (secretary) or facsimile: 02920744166
_______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to [email protected]
