Although you find the most of the following tips by simple googling or visiting the ActiveResource documentation, I just wanted to outline them on one single page again (mostly because of my obliviousness).
Sometimes it is necessary to use the psql command line tool to quickly explore odds in database. Often you also need to use some commands to view structure of your database or tables. In PostgreSQL (and also in other database systems) you can do that by querying system tables like pg_tables , pg_class , pg_attribute and so on.
Advertisements are another option to provide your iOS applications still for free but also to get some cash back for your work. Although ads are not that popular to app users Apple made a big hit with their new iAd network. I’d like to call iAd the next level of advertisement on mobile devices because they offer a totally different experience compared to common text or banner based ads.