Ontology and Data Warehousing How Data Warehousing Investments Can Deliver Continuous Roi

Executive Summary Data warehouses are designed to aggregate data and allow decision makers to obtain accurate, complete and up to date information. A data warehouse stands or falls on the quality of the data it contains. Most existing warehouses contain a subset of the available data and allow a limited range of queries on that data, because it is impossible to justify the cost of development of a more complete system. As a result, the quality and value of information suffers while managers are missing key facts required to make informed decisions.