I'm learning about techniques to ensure GIS data quality. Googling around, I've found a few papers about theory and best practices (here and here), and a couple of short presentations about the topic using ESRI tools (here and here)
For example, the concepts of "tolerance" and "precision" are globally defined in ArcGIS (I didn't know it), and I think Oracle globally manages the concept of "tolerance" too. On the other hand, as far as I know, PostGIS doesn't expose the user-defined precision model supported by GEOS, and simply uses the full precision of floating point numbers.
So, my question is: what PostGIS [topology] provided tools may be used for data quality assurance? Has anyone experience with this topic? Or maybe I'm just selecting the wrong tool for this.