Data Warehousing

cottonseedfearnotΗλεκτρονική - Συσκευές

7 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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Data Warehousing


Text and Resources

The Data Warehouse Lifecycle Toolkit,
Kimball, Reeves, Ross, and Thornthwaite

Internet resources

Data Warehousing Institute

Teradata Institute

Intelligent Enterprise

Data Warehouse Approach

An old idea with a new interest:

Cheap Computing Power

Special Purpose Hardware

New Data Structures

Intelligent Software

Heightened Business Competition

Data Warehouse

“Queryable source of data in the enterprise”

Common source of consistent
organizational information

Identify problems and opportunities

User focused

Retrieval focused

Goals of the Course

Understand the Data Warehouse philosophy

Dimensional modeling

Tools for Warehouse management

Business intelligence

Business practice

What To Expect

Help develop course expectations for the

Two tests

Exercises and a semester project

Graduate Presentation

What is a data warehouse?

A database filled with
large volumes of
historical business
information that users
can access with
various query tools.

The warehouse usually
resides on its own
server and is separate
from the transaction
processing or “run
business” systems.

Purpose of a data warehouse

Provides an architecture for the flow of data
from operational systems to decision
support systems

DW involves a many record analysis, during
which all data has to be locked

Used to discover trends and patterns

Present opportunities

Identify problems

ROI of data warehouses

New insights into

Customer habits

Developing new products

Selling more products

Cost savings and revenue

selling of products

Less mainframe computer

Identify and target most
profitable customers

Capital outlay and
development/training time
can be extraordinary.

Quality of system output

Levels of risk

Intangibles (middle ground)

Course Outline

Introduction and basic principles

Data extraction: SQL data definition code

Warehouse Architecture: Dimensional

Data Cleansing: SAS Datastep coding

Data Presentation: MS Analysis Services