Ah, good old HIPO Charts. I vaguely remember using them about 20-30 years ago.
Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco Regional Networking Academy Priscilla Oppenheimer wrote: > Having given it more thought I decided that a hierarchy doesn't have to be > a tree. A tree is a diagram or graph that branches from a single stem > without forming loops or polygons. > > A hierarchy could have "loops" or "polygons." In other words, there could > be more than one way to get between layers in the hierarchy. Think of the > dotted lines we so often see on org charts. > > When you look at examples of Cisco's hierarchical design, in most cases > they aren't actually trees. There are, of course, redundant ways to get > between layers. > > Hierarchy just implies layers and that each layer has a particular job and > ranking. I don't think it has a mathematical meaning. In fact (and Howard > will like this because it goes with his 7 deadly sins ;-) most of the > meanings for hierarchy have to do with the church: > > 1 a division of angels > 2 a ruling body of clergy organized into orders or ranks each subordinate > to the one above it; especially : the bishops of a province or nation b : > church government by a hierarchy > > So, it was an off-the-wall comment that made sense when in a hurry and not > when given some thought. > > (Although a lot of systems analysis techniques do assume that hierarchy > means tree!??) Did anyone every use IBM's HIPO method: Hierarchy, Input, > Process, Output. It worked extremely well. I don't think it would let you > use a hierarchy that wasn't also a tree, although I can't remember for sure. > > Priscilla > > At 12:17 PM 10/23/01, Jonathan Hays wrote: > >Not being trained in topological mathematics I am geussing that you are > >telling us > >that there are other common hierarchical forms. The tree is the only one I > >hear about. > >What are the others you have in mind? > > > >Priscilla Oppenheimer wrote: > > > > > I was hoping nobody would answer. ;-) Because actually I don't like my > > > answer. It should read, "A hierarchical network design MAY already be a > > > tree!" It wouldn't necessarily be a tree. > > > > > > Priscilla > ________________________ > > Priscilla Oppenheimer > http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23993&t=23497 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
