1. Introduction
Any knowledge management system relies ultimately on the timely and accurate
retrieval of appropriate facts, and self-evidently facts come in many different forms.
They have different structures; they vary in terms of certainty, reliability, applicability
and accessibility; they may be located within the enterprise’s own data and information
management systems, in external systems and libraries, or embedded in human
expertise. Designing and building a knowledge management system involves ensuring
that the right facts can be called upon to answer the question at hand, and coordinating
a number of disparate resources.