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Management Information Systems

Prof. M P JaiswalManagement Development Institute Gurgaon

E-Mail: mpjaiswal@mdi.ac.in

Presented to EMP on October 9, 2011

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Computing Architecture of Information Systems

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Key Components of an Enterprise

Business Logic

PresentationData Management

Data Management

Business Processes Analysis & Presentation

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Mainframe Era

Mainframe

Terminal

Data Management

Business ProcessesAnalysis & Presentation

Focus: Shared Technology and Information

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DATABASE

SERVERS

(e.g. Sybase)

CLIENT SERVER

PRESENTATION

& FUNCTIONS(e.g. Powerbuilder)

Client/Server: Two-Tier Approach

Advantages DisadvantagesEconomical Client complexity

Flexible Lock-in (SW, Data)Portable Batch access to legacy systems

Limited to client/server pairs

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Three-Tier Strategy (Distributed Processing)

Server

LEGACYe.g. IMS Mainframe

e.g. Oracle,Sybase

NEW DATA

CLIENTVIRTUAL DATA MODEL& FUNCTION SERVERS DATA & LEGACY SYSTEMS

On-line

PRESENTATION

Broker/NamingServer

SecurityFunctionality

ApplicationFunction

Server

Management

Connectivity

Connectivity

DatabaseServer

e.g., Oracle Card Visual Basic

ODE Card Powerbuilder C++ Client Motif

Advantages DisadvantagesNo Lock-in PeopleLegacy online Technology not mature

Distributed Components

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The Web as a Client-Server System

Internet/ Extranet/

intranet

Servers (ERP, Web and database)

Page

e.g., HLL

e.g., HLL

Browser Software(Netscape)

Client

Presentation New Delhi

Mumbai

Server

Simple data [static Web pages]

Business logic (cgi scripts)

with access to data (often RDBMS)

[dynamic Web pages]

Servers (ERP, Web and database)

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The extended ERP SPECTRUMThe extended ERP SPECTRUMCustomers

Customers

Customers

Internet

Extranet

Supply Chain

Management

(SCM)

Supplier

Supplier

Supplier

Internet

ExtranetT

heC

ompany

Enterprise Resource Planning

(ERP)

The Information Backbone

Supplier/Vendor Facing Systems

Optimize Relationships with

Business Partners

Reduce Cost of Inputs

Internal Systems

Facilitate Internal

Operations &

Increase productivity

Customer Facing Systems

Optimize Relationship with

Customers

Increase Services Effectiveness

VALUE CHAIN

Customer

Relationship

Management

(CRM)

(Communication

backbone)

(Communication

backbone)

Enterprise Application

Integration (EAI)

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Evolution ofCloud Computing

Grid

Computing

Virtualization

Cloud

Computing

ManyComputer

acting like One

Solving large problems

with Parallel Computing

One Computer acting

like Many

The ability to run multiple

operating systems on a single

physical system and share the

underlying hardware resources

Collection of

NetworkHosted

Services accessible

from anywhere

Next-Generation

Internet computing

Next-Generation

Data Centers

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Cloud Computing Pyramid

Software as a Service

(SaaS)

Platform as aService

Infrastructure as a Service

Business Process as

a Service

Public

Private

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Cloud ComputingCharacteristics

Cloud Computing is a model of how IT should operate as a business!

Business Flexibility Business Agility

Innovation in IT Architecture

Innovation in IT Delivery

Innovation in IT Contract

Innovation in IT Governance

&

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Source: Book on ERP by Jaiswal and Vanapalli, Macmillan