See why a hierarchical structure designed for XML could be a better choice than a relational database. Written by Brian Schaffner, Contributor Oct. 9, 2001, 5:00 p.m. PT ...

PowerPoint offers preset hierarchical chart templates, so you won't even have to set one up yourself. Simply corral the Excel information you need and merge it in with PowerPoint.

Michael J. Daniels, Constantine Gatsonis, Hierarchical Generalized Linear Models in the Analysis of Variations in Health Care Utilization, Journal of the American Statistical Association, Vol. 94, No.

Russell B. Millar, Comparison of Hierarchical Bayesian Models for Overdispersed Count Data Using DIC and Bayes' Factors, Biometrics, Vol. 65, No. 3 (Sep., 2009), pp. 962-969 ...