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Types Of Information System Essay

1384 words - 6 pages

Types of Information Systems

PGDM Trimester I, 2013

Types of Information Systems

IT applications in Management, 2013

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Operation Support Systems
Definition: • Information systems that process data generated by and used in business operations • Goal:
– efficiently process business transactions, – control industrial processes, – support enterprise communications and collaboration, and – update corporate databases
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Examples
• Transaction Processing Systems (TPS) – record and process data resulting from business transactions, update operational databases, and produce business documents. • Sales and inventory processing, accounting ...view middle of the document...

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MIS Report

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Operational & Managerial IS
Expert Systems – provide expert advice for operational chores or managerial decisions
Process Monitor, diagnostic maintenance systems

Knowledge Management Systems – support the creation, organization, and dissemination of business knowledge to employees and managers
Sales proposal strategies Intranet access Best practices Customer problem resolution system

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IS Classifications by Scope
Functional Business Systems – support basic business functions
Accounting, marketing, finance, operations, HR

Strategic Information Systems – support processes that provide a firm with strategic products, services, and capabilities for competitive advantage
Online stock trading, shipment tracking, e-commerce web systems

Cross-functional Information Systems – integrated combinations of information systems
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INFORMATION ARCHITECTURE
• • • • • • • Mainframe Environment PC Environment Distributed Processing Client Server architecture Legacy Systems Peer-to-peer Web-based system
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The IT architecture of an e-business

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Mainframe environment
• One or more mainframe computers(providing both storage and computational capabilities) connected with terminals. • Earlier, the users work with passive (or “dumb”) terminals, which are used to enter or change data and access information from the mainframe and are controlled by it. • Later, replaced with smart terminals( or intelligent terminals) • This was the dominant architecture until the mid-1980s. • Drawbacks:
– inflexibility and poor price-to performance ratio.
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Legacy Systems
• Legacy systems are older, usually mature, information systems. Although legacy systems are normally less desirable than and less compatible with modern equivalents. They are still, in some cases, part of the backbone of the overall IT infrastructure within an organization. • They are usually part of a pure mainframe system or a distributed system in which the mainframe plays the major role. Newer legacy systems may include one or more LANs and even client/server implementations. • Legacy systems were developed from the late 1950s through the 1980s for general-purpose business use in medium- to large-size companies. They were the primary mechanism for high-volume processing applications. • Because companies invested lots of money and expertise in building legacy systems, many companies try to reengineer these systems rather than to replace them.
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PC Environment
• In the PC configuration, only PCs provide the computing power in the information system.
– Standalone PC – PC-LANs. – Wireless LANs.

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Distributed Processing
• Distributed...

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