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Presentation On
Data Warehouse
Name : Nahian Ahmed
ID: 151-15-5137.
Section – ‘G’
A producer wants to know….
Which are our
lowest/highest margin
customers ?
Who are my customers
and what products
are they buying?
What is the most
effective distribution
channel?
What product prom-
-otions have the biggest
impact on revenue? What impact will
new products/services
have on revenue
and margins?
Which customers
are most likely to go
to the competition ?
What is a Data Warehouse??
• A data warehouse is an appliance for storing and analyzing data, and reporting.
• Central database that includes information from several different sources.
• Used to produce reports to
assist in decision-making
and management.
What is Data Warehousing?
A process of transforming data
into information and making it
available to users in a timely
enough manner to make a
difference
Data
Information
“Data Warehouse is a subject
oriented, integrated, time-
variant and non-volatile
collection of data in support of
management’s decision making
process.” – W. H. Inmon
Data
Warehouse
Subject
Oriented
Integrated
Time
Variant
Non-
volatile
Data Processing Technologies
• OLTP (on-line transaction processing)
- The major task is to perform on-line
transaction and query processing. Covers
most of the day-to-day operations of an
organization.
• OLAP(On-Line Analytical Processing)
- Serve knowledge workers(users) in the
role of data analysis and decision making.
- Organize and present data in various
formats to accommodate the diverse needs
of the different users.
Data Processing
Technologies
OLTP OLAP
To summarize ...
 OLTP Systems are
used to “run” a business
 The Data Warehouse helps
to “optimize” the business

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Data warehouse

  • 1. Presentation On Data Warehouse Name : Nahian Ahmed ID: 151-15-5137. Section – ‘G’
  • 2. A producer wants to know…. Which are our lowest/highest margin customers ? Who are my customers and what products are they buying? What is the most effective distribution channel? What product prom- -otions have the biggest impact on revenue? What impact will new products/services have on revenue and margins? Which customers are most likely to go to the competition ?
  • 3. What is a Data Warehouse?? • A data warehouse is an appliance for storing and analyzing data, and reporting. • Central database that includes information from several different sources. • Used to produce reports to assist in decision-making and management.
  • 4. What is Data Warehousing? A process of transforming data into information and making it available to users in a timely enough manner to make a difference Data Information
  • 5. “Data Warehouse is a subject oriented, integrated, time- variant and non-volatile collection of data in support of management’s decision making process.” – W. H. Inmon Data Warehouse Subject Oriented Integrated Time Variant Non- volatile
  • 6. Data Processing Technologies • OLTP (on-line transaction processing) - The major task is to perform on-line transaction and query processing. Covers most of the day-to-day operations of an organization. • OLAP(On-Line Analytical Processing) - Serve knowledge workers(users) in the role of data analysis and decision making. - Organize and present data in various formats to accommodate the diverse needs of the different users. Data Processing Technologies OLTP OLAP
  • 7. To summarize ...  OLTP Systems are used to “run” a business  The Data Warehouse helps to “optimize” the business