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Data WarehousingData Warehousing
and its Importanceand its Importance
in MNCsin MNCs
A producer wants to knowA producer wants to know
2
Which are our
lowest/highest margin
customers ?
Which are our
lowest/highest margin
customers ?
Who are my customers
and what products
are they buying?
Who are my customers
and what products
are they buying?
Which customers
are most likely to go
to the competition ?
Which customers
are most likely to go
to the competition ?
What impact will
new products/services
have on revenue
and margins?
What impact will
new products/services
have on revenue
and margins?
What product prom-
-otions have the biggest
impact on revenue?
What product prom-
-otions have the biggest
impact on revenue?
What is the most
effective distribution
channel?
What is the most
effective distribution
channel?
Data, Data everywhereData, Data everywhere
• An MNC can’t find the data it needs
o data is scattered over the network
o many versions, subtle differences
3
MNC can’t get the data it needs
need an expert to get the data
MNC can’t understand the data found
available data poorly documented
MNC can’t use the data found
results are unexpected
data needs to be transformed from one
form to other
What are the users saying...What are the users saying...
• Data should be integrated
across the enterprise
• Summary data has a real value
to the organization
• Historical data holds the key to
understanding data over time
• What-if capabilities are
required
4
What is a Data Warehouse?What is a Data Warehouse?
A single, complete and
consistent store of current
and historic data, obtained
from a variety of different
sources, and made available
to end users in a way they
can understand and use in
business context.
5
What is Data Warehousing?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.
Technique for assembling and
managing data, (from various
sources) for the purpose of
answering business questions.
Thus making decisions that were
not previous possible
6
Data
Information
Warehouses are very LargeWarehouses are very Large
Data BasesData Bases
• Terabytes -- 10^12 bytes:
• Petabytes -- 10^15 bytes:
• Exabytes -- 10^18 bytes:
• Zettabytes -- 10^21 bytes:
• Zottabytes -- 10^24 bytes:
7
Walmart -- 24 Terabytes
Geographic Info. Systems
National Medical Records
Weather images
Intelligence Agency Videos
Data Warehouse PropertiesData Warehouse Properties
o Subject Oriented
o Used to analyze business
o Summarized and refined
o Snapshot data
o Integrated Data
o Ad-hoc access
o Knowledge User (Manager)
o Thousands of Users
8
Components of the WarehouseComponents of the Warehouse
• Data Extraction and Loading
• The Warehouse
• Analyze and Query -- OLAP Tools
• Metadata
9
Data Warehouse ArchitectureData Warehouse Architecture
10
Data Warehouse
Engine
Optimized Loader
Extraction
Cleansing
Analyze
Query
Metadata Repository
Relational
Databases
Legacy
Data
Purchased
Data
ERP
Systems
Data Warehouse and Data MartsData Warehouse and Data Marts
11
OLAP
Data Mart
Lightly summarized
Departmentally structured
Organizationally structured
Atomic
Detailed Data Warehouse Data
From the Data Warehouse toFrom the Data Warehouse to
Data MartsData Marts
12
Departmentally
Structured
Individually
Structured
Data Warehouse
Organizationally
Structured
Less
More
History
Normalized
Detailed
Data
Information
Application AreasApplication Areas
13
Industry Application
Finance Credit Card Analysis
Insurance Claims, Fraud Analysis
Telecommunication Call record analysis
Transport Logistics management
Consumer goods promotion analysis
Data Service providers Value added data
Utilities Power usage analysis
Thank You!!!Thank You!!!
14
A Presentation by:A Presentation by:
Abhitanjay Chaudhary (C23)Abhitanjay Chaudhary (C23)
Owais Ashraf (C41)Owais Ashraf (C41)
Anant Prakash Gupta (C24)Anant Prakash Gupta (C24)
Rajat Sharma (C20)Rajat Sharma (C20)

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Data warehousing

  • 1. Data WarehousingData Warehousing and its Importanceand its Importance in MNCsin MNCs
  • 2. A producer wants to knowA producer wants to know 2 Which are our lowest/highest margin customers ? Which are our lowest/highest margin customers ? Who are my customers and what products are they buying? Who are my customers and what products are they buying? Which customers are most likely to go to the competition ? Which customers are most likely to go to the competition ? What impact will new products/services have on revenue and margins? What impact will new products/services have on revenue and margins? What product prom- -otions have the biggest impact on revenue? What product prom- -otions have the biggest impact on revenue? What is the most effective distribution channel? What is the most effective distribution channel?
  • 3. Data, Data everywhereData, Data everywhere • An MNC can’t find the data it needs o data is scattered over the network o many versions, subtle differences 3 MNC can’t get the data it needs need an expert to get the data MNC can’t understand the data found available data poorly documented MNC can’t use the data found results are unexpected data needs to be transformed from one form to other
  • 4. What are the users saying...What are the users saying... • Data should be integrated across the enterprise • Summary data has a real value to the organization • Historical data holds the key to understanding data over time • What-if capabilities are required 4
  • 5. What is a Data Warehouse?What is a Data Warehouse? A single, complete and consistent store of current and historic data, obtained from a variety of different sources, and made available to end users in a way they can understand and use in business context. 5
  • 6. What is Data Warehousing?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. Technique for assembling and managing data, (from various sources) for the purpose of answering business questions. Thus making decisions that were not previous possible 6 Data Information
  • 7. Warehouses are very LargeWarehouses are very Large Data BasesData Bases • Terabytes -- 10^12 bytes: • Petabytes -- 10^15 bytes: • Exabytes -- 10^18 bytes: • Zettabytes -- 10^21 bytes: • Zottabytes -- 10^24 bytes: 7 Walmart -- 24 Terabytes Geographic Info. Systems National Medical Records Weather images Intelligence Agency Videos
  • 8. Data Warehouse PropertiesData Warehouse Properties o Subject Oriented o Used to analyze business o Summarized and refined o Snapshot data o Integrated Data o Ad-hoc access o Knowledge User (Manager) o Thousands of Users 8
  • 9. Components of the WarehouseComponents of the Warehouse • Data Extraction and Loading • The Warehouse • Analyze and Query -- OLAP Tools • Metadata 9
  • 10. Data Warehouse ArchitectureData Warehouse Architecture 10 Data Warehouse Engine Optimized Loader Extraction Cleansing Analyze Query Metadata Repository Relational Databases Legacy Data Purchased Data ERP Systems
  • 11. Data Warehouse and Data MartsData Warehouse and Data Marts 11 OLAP Data Mart Lightly summarized Departmentally structured Organizationally structured Atomic Detailed Data Warehouse Data
  • 12. From the Data Warehouse toFrom the Data Warehouse to Data MartsData Marts 12 Departmentally Structured Individually Structured Data Warehouse Organizationally Structured Less More History Normalized Detailed Data Information
  • 13. Application AreasApplication Areas 13 Industry Application Finance Credit Card Analysis Insurance Claims, Fraud Analysis Telecommunication Call record analysis Transport Logistics management Consumer goods promotion analysis Data Service providers Value added data Utilities Power usage analysis
  • 14. Thank You!!!Thank You!!! 14 A Presentation by:A Presentation by: Abhitanjay Chaudhary (C23)Abhitanjay Chaudhary (C23) Owais Ashraf (C41)Owais Ashraf (C41) Anant Prakash Gupta (C24)Anant Prakash Gupta (C24) Rajat Sharma (C20)Rajat Sharma (C20)