On 29/07/10 11:15, Pierre Thibault wrote: > What I would like to do is enable users to create their own data model. Then, really, SQL databases aren't wonderful for your needs. You can use them for dynamic, user-defined schema, but you'll always be swimming up hill. > I thought about using a table where each row would represents a field in > the dynamic model. The row would contain a fields for each possible data > type supported but only one of them would be used. Google "EAV" This has known problems. It works, but it's kind of like bolting floats onto a car and trying to use it as a boat. Not very nice. Really, I'd be researching dynamic schema databases, object stores, key/value set stores, etc. Such things are outside my personal experience, though, and I can't really advise you much on technologies. Beware of the latest No-SQL fad platforms, though; you might land up being better off with something older and more stable even if it's less fashionable than CouchDB or whatever is currently "in" today. -- Craig Ringer Tech-related writing: http://soapyfrogs.blogspot.com/ -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
