Inverse distribution operations are performed on a large distributed parallel database comprising a plurality of distributed data segments to determine a data value at a predetermined percentile of a sorted dataset formed on one segment. During image processing, row-wise noise is corrected by applying a fractional portion of a maximum digital correction to the pixels. The schemas can further include item and container classes and can extend other schemas so as to provide functionality that is more specific to the collaboration server. An energy source, such as a heat source, a light source, a microwave source, or the like, is used to activate the catalyst in order to aid in the release of the accumulated eschar.