Here's an article about friendfeed and their approach using schema-
less mysql. Might be some ideas in there for you.

http://bret.appspot.com/entry/how-friendfeed-uses-mysql

On Jun 2, 2:45 pm, Korny Sietsma <[email protected]> wrote:
> Also, I'm not sure how it'd play with rails, but I've done a lot of
> useful sql database fiddling lately with the 'sequel' library
> (http://sequel.rubyforge.org/) - it's very powerful for ad-hoc
> querying and updating SQL databases, without needing any sort of model
> class (unless you want one)
>
> For example, I have code like:
> @db[:parent_table].filter(:name => "foo").inner_join(:child_table,
> :parent_id => :id).each { ... }
>
> Also of note; if you are forced to handle actual spreadsheets, the
> apache POI libraries (http://poi.apache.org/) are pretty easy to use
> from JRuby - I'm using them with Sequel to do some pretty hairy data
> migrations, with a lot of success.  (Sadly, many business types are
> far better at putting tabular data in a spreadsheet than anything as
> complex as, say, a CSV or YAML file)
>
> - Korny
>
>
>
>
>
> On Tue, Jun 2, 2009 at 2:13 PM, Eaden McKee <[email protected]> wrote:
>
> > On Tue, Jun 2, 2009 at 3:26 PM, Sven Schott <[email protected]> wrote:
> >> Unfortunately not an option. Any data has to stay in-house since it would 
> >> be
>
> > Sure, I understand :)
>
> > In that case I could suggest rbDB(
> >http://github.com/redox/rbdb/tree/master) and Typus (
> >http://github.com/fesplugas/typus/tree/master) as possible starting
> > points for Rails apps that edit multiple tables with single
> > controllers to get ideas from or fork.
>
> > Eaden
>
> --
> Kornelis Sietsma  korny at my surname dot com
> "Every jumbled pile of person has a thinking part
> that wonders what the part that isn't thinking
> isn't thinking of"
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