Using Views with a non-default data source
Here are some examples of data source plug-ins that Views can use as query back-ends.
- Apache Solr Views
- EntityFieldQuery Views Backend
- Google Analytics Reports
- SPARQL Views
- Twitter Views Backend
- World Bank API
- Views XML Backend
- YQL Views Query Backend
Any of these projects can be used as an additional baseline for creating additional query plugins. Please feel free to contribute a full tutorial on writing one!