Overview
Before we jump into the characteristics of an Enterprise Data Warehouse (‘EDW’) it might help to define what an EDW consists of. An EDW is a centralized repository that integrates data from various transactional, legacy, or 3rd party systems and applications that are used to operate and manage your business. In contrast to these systems, the EDW is built for analysis and retrieval of data rather than the upkeep of individual transactional records.
Ralph Kimball, one of the original architects of data warehousing and someone whose teachings we adhere to, provided a more concise definition of a data warehouse: “A data warehouse is a copy of transaction data specifically structured for query and analysis.”.