May 2024
Intermediate to advanced
325 pages
12h 2m
English
Content preview from Distributed Database Systems, 1st Edition by Chhanda Ray
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Data Warehousing and Data Mining
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257
tools, data mining tools and querying tools. Moreover, in the data warehouse architecture, opera-
tional data and processing are completely separated from data warehouse processing. Typically,
the source data for the warehouse is coming from operational applications or the operational data
store (ODS), and these are transformed into an integrated structure and format. The transforma-
tion process involves several steps such as extraction, cleansing, conversion and summarizing. The
components of a data warehouse are described in the following.
ODS 1
ODS 2
ODS n
Backup/Archive
data
Meta-data
Detailed
data
Summarized ...
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