Infrastructure Applications
Requirements for classes
of applications
IT Drivers
Data Warehousing
Enterprise Management
SAP and others
Supply chain management
Electronic Commerce
Business to business
Electronic retail
Data Warehousing
Building a database to
support the decision
making activities of a
department or business
unit
Data Warehouse
A read-only database for decision analysis
–Subject Oriented
–Integrated
–Time variant
–Nonvolatile
consisting of time stamped operational
and external data.
Data Warehouse
Architecture
Enterprise
Data
Warehouse
Data
Marts
Business
Packages
Three Approaches
Classical Enterprise Warehouse
Contains integrated operational data from
all areas of the organization.
Data Mart
Extracted and summarized data designed
for departmental or EUC applications
Data Project
Data for a specific application or analysis
Data Warehouse vs
Operational Databases
Highly tuned
Real time Data
Detailed records
Current values
Accesses small
amounts of data in a
predictable manner
Flexible access
Consistent timing
Summarized as
appropriate
Historical
Access large amounts
of data in unexpected
ways
Access
Tailored access programs in user form,
usually client-server
Specialist interfaces
General purpose GUI products (e.g.
Access, PowerBuilder)
Custom access routines
ERP Reality
Complete systems can cost tens of
millions of dollars
Implementation can take several
years
Companies may lose flexibility
What is SAP?
Systems Applications and Products in Data Processing
SAP is the leading global provider of
client/server business application solutions
SAP is the number one vendor of standard
business applications software
SAP is the fifth largest independent
software supplier in the world
Electronic Commerce
Interorganizational
Systems:
Business-to-business
Electronic storefront
Market Exchange
Interorganizational Structure
Vertical integration
Multiple activities in the same firm
Risk: range of expertise required
Selective sourcing
Some outsourced activities
Risk: control of outsourcer
Virtual corporation
Coordination of separate activities
Risk: loss of core competency
Questions
Do we benefit from electronic commerce?
Do we use information to add value to customers?
Are we managing the product/service channel?
Have we redesigned business with our partners to
take advantage of technology and provide security
Do we have partners with shared vision and
common purpose?
Do we have the right infrastructure?
External / Internal Hosting
Outside (Cheaper)
minimize bandwidth and hardware problems
use external experts
installed infrastructure
little additional staffing required
Inside (More Control)
dependent on third party reliability
possible single vendor software solutions
possible single vendor payment scheme
External / Internal Hosting
External better at storefronts
but requires close integration with core
business
Internal better at business to business
but often creates a self-contained replicated
system that can be outsourced
Payment
Credit Cards
SET (Secure Electronic Transaction) with http
Electronic Checks
Public/private key transactions with banks
Electronic Cash
3rd party software to create virtual cash
EDI/EFT
Value added network using 3rd party. Common in
business to business.
Infrastructure Drivers