Chapter 17. High Availability and a Data Warehouse

Introduction

When data warehouses were first built, they were considered as a repository for historical data to be used for business analysis by a chosen few. However, as technology and business practices have evolved, businesses now need to use daily business intelligence at all levels of the organization to stay competitive. The data warehouse, being the central repository of information about the business, thus plays a key role in the day-to-day operation of the business. This means that, as with OLTP systems, the data warehouse system must also be extremely reliable and nearly always available. Depending on how the data warehouse is used in the business, a short downtime could severely hamper ...

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