37. The system of claim 36 , wherein the item is a file, and the automatic deduction of the file's assignment is done by determining an extension of that file.
36. The system of claim 34 , wherein assigning one or more Attributes to each item is recorded in a database by explicit insertion or by automated deduction that the assignment of the Attribute is required from an item's one or more Attributes and the transitive implications among the Attributes.