QGIS Podcast on QGIS and Postgis
The most recent episode of the QGIS podcast features an interview on QGIS and Postgis, with Postgis founder Paul Ramsey, interviewed by Tim Sutton.
The original goal of QGIS in its first development years was a Postgis Viewer, before QGIS took off as a general GIS platform. Postgis is still the best external spatial database supported by QGIS. A combination that proved powerful and reliable in many production projects.