Here are the slides from my talk at XTech 2008 in Dublin this morning.
Download as PDF
Hopefully they'll make a bit of sense without the accompanying explanation.
The main points, I think, were
- Once you have an object that's a bundle of identifiers and attributes, you should be able to use that to query databases directly, without having to know which fields each of those databases makes use of.
- Using Amarok as an example of querying web services and local databases to display contextual information appropriate to the current activity, communicated in real-time over XMPP.