In the earlier ArcInfo days, when data was managed as coverages, topology was managed through a series of tables. There was a polygon attribute table (PAT) that stored specific information about the spatial relationships of each polygon, an arc attribute table (AAT) that stored specific information about each arc/line, either for linear features or the features that made up each polygon, and a node attribute table (NAT) that stored specific spatial information about where lines would begin and terminate. There was also a point attribute table (PAT) that contained specific spatial relationship information about point features.
However, now that we're in an ESRI world of geodatabases, how is this topology managed now? Are there perhaps still PAT's, AAT's and NAT's, but they are now in different formats that we can no longer see and access?
Can anyone explain how the ArcGIS geodatabase model (file or personal) keeps track of the spatial relationships in each polygon, arc and node? Is it technically the same as before, and if not, how has this changed?