> On 13 Apr 2015, at 4:20, Ian Barwick <ian@xxxxxxxxxxxxxxx> wrote: > > On 13/04/15 11:08, Michael Cheung wrote: >> hi, all; >> >> I am new here. And I need some suggestion. >> >> I have many similar database to store data for every customer. >> Structure of database is almost the same. >> As I use same application to control all these data, so I can only use >> one database user to connect to these database. >> And I have no needs to query table for different customer together. >> >> I wonder which I should use, different shema or different database to store data? >> >> I 'd like to know the advantage and disadvantage for using schema or database. > > If as you say access to the database is via a single application database > user, it will probably make more sense to use multiple schemas rather than > multiple databases. Keeping everything in one database will simplify > administration (e.g. making backups - ypu'll just need to dump the one database > rather than looping through a variable number) and will make life easier if you > ever need to do some kind of query involving multiple customers. That's easier to backup, sure, but you can't restore a single customer's schema easily that way. So if one customer messes up their data big time, you'll need to restore a backup for all customers in the DB. Alban Hertroys -- If you can't see the forest for the trees, cut the trees and you'll find there is no forest. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
