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Building the data warehouse
Database and database theory have been around for a long time. Early renditions of database centered around a single database serving every purpose known to the information processing community-from transaction to batch processing to analytical processing. In most cases, the primary focus of the early database systems was operational-usually transactional-processing. Because of these reasons and may more, the modern way to build systems is to separate the operational from the informational or analytical processing data. This book is about the analytical [or the decision support systems (DSS)] environment and the structuring of data in that environment. The focus of the book is on what is termed the data warehouse", which is at the heart of informational, DSS processing."
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