by a business. Understanding this question is critical for evaluating measurement of business dynamics. Chapter 3 describes the ideal business data system. The discussion is intended to outline the objectives for further development of the system while at least keeping in the background the many factors constraining the collection of and access to business data. Chapter 4 provides an overview of the current system and discusses the gaps between the (constrained) ideal and the actual system in the United States. This discussion is a natural springboard for Chapter 5 which includes the recommendations of the study.