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Database Systems by Shripad V. Godbole, Elvis C. Foster

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CHAPTER 24

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Data Warehousing

Since the mid1990s, database technology has expanded into a new area of interest — the development and management of data warehouses. It is a fascinating field of study that deserves some attention. This chapter provides an overview of data warehousing and information extraction. The chapter proceeds under the following subheadings:

  • Introduction
  • Rationale For Data Warehousing
  • Characteristics of a Data Warehouse
  • Data Warehouse Architectures
  • Extraction, Transformation and Loading
  • Summary and Concluding Remarks

24.1 Introduction

The concept of a data warehouse springs from the combination of two sets of needs:

  • The business ...

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