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It for Managerment

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Submitted By maiphuong200708
Words 2531
Pages 11
ENTERPRISE SYSTEMS

1

APPLICATION AREAS
Interorganizational systems • Systems that span organizational boundaries • e-Business applications
– B2C – link businesses with their end consumers – B2B – link businesses with other business customers or suppliers
• Electronic data interchange (EDI) systems

2

APPLICATION AREAS
Intraorganizational systems

3

APPLICATION AREAS
Intraorganizational systems (cont’d)

4

CRITICAL CONCEPTS
Batch processing • A group (or batch) of transactions are accumulated, then processed all at one time

5

CRITICAL CONCEPTS
Batch processing (cont’d) • In the early days of computers, all processes were batched • Major problem is the time delay before the master file is updated

6

CRITICAL CONCEPTS
Online processing • Each transaction is entered directly into computer when it occurs

7

CRITICAL CONCEPTS
Batch processing vs. Online processing
• Significant delay before master • Master file updated within a file is updated (usually 1 day) fraction of a second • Much less expensive to operate • Much more expensive to operate

Batch Processing

Online Processing

• Some applications naturally suited for batch processing (e.g., payroll)

• Some applications need to be processed in real time

Note: given the tradeoffs, hybrid systems that combine online data entry with batch processing are very common
8

CRITICAL CONCEPTS
Online processing

9

CRITICAL CONCEPTS
Functional information systems • Information systems that support one of an organization’s primary business functions
Example Business Functions and Subsystems Marketing Accounting Production Planning Production Scheduling Personnel Personnel Engineering

Sales Forecasting Etc.
10

Vertically integrated information systems • Serve more than one vertical level in an organization or industry
Example Sales System
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