Infrastructure Applications

Requirements for classes of applications

IT Drivers

Data WarehousingEnterprise 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

EnterpriseData

Warehouse

DataMarts

BusinessPackages

Three Approaches

Classical Enterprise WarehouseContains integrated operational data from all areas of the organization.

Data MartExtracted and summarized data designed for departmental or EUC applications

Data ProjectData for a specific application or analysis

Data Warehouse vsOperational Databases

Highly tunedReal time DataDetailed recordsCurrent valuesAccesses small

amounts of data in a predictable manner

Flexible accessConsistent timingSummarized as

appropriateHistoricalAccess large

amounts of data in unexpected ways

Access

Tailored access programs in user form, usually client-server

Specialist interfacesGeneral 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-businessElectronic storefront

Market ExchangeInterorganizational Structure

Vertical integrationMultiple activities in the same firm

Risk: range of expertise required

Selective sourcingSome outsourced activities

Risk: control of outsourcer

Virtual corporationCoordination 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 securityDo 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 storefrontsbut requires close integration with core

businessInternal better at business to

businessbut often creates a self-contained

replicated system that can be outsourced

Payment

Credit CardsSET (Secure Electronic Transaction) with http

Electronic ChecksPublic/private key transactions with banks

Electronic Cash3rd party software to create virtual cash

EDI/EFTValue added network using 3rd party. Common

in business to business.

Infrastructure Drivers