April 2016
Intermediate to advanced
712 pages
18h 34m
English
Content preview from Relational Database Design and Implementation, 4th Edition
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Chapter 24
Data Warehousing
Abstract
This chapter presents an overview database warehouses, large databases used for strategic decision making, rather than day-to-day transaction processing. The chapter discusses data modeling for data warehouses, as well as the extract-translate-load process.
Keywords
data warehouse
data warehousing
extract-translate-load
ETL
dimensional modeling
A data warehouse is a repository of transaction and nontransaction data used for querying, reporting, and corporate decision-making. The data typically come from multiple sources. They are not used for day-to-day corporate operations and therefore once data have been stored, tend to change much less than the transactional/operational databases we have used as examples ...
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