Organizational structure - chart

[Dave Godbey <dgodbey@hq.nasa.gov>]

Folks,
My apologies if this thread has occurred before, as I suspect it has. I 
welcome redirection to a faq or other discussion.

What are the best ways to construct a schema/namespace that represent an 
organizational structure? I have an org chart that has a collection of 
offices that are organized as a tree to an arbitrary depth. eg:

Office of Operations

	Director					555-1212
	Director Business Mangagement		555-1313
		Procurement			555-1213
		Payroll				555-1214
	Director Info Technology			555-1215

etc.

Is the semi-hierarchy with a flat base the best way to go? What other 
schemes are viable?

Thanks,
Dave