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Information system

Group members Shoaib shaikh & Syed Ahsan

Shaheed Benazir Bhutto University SBA

Topic of presentation is:

What is Information system

• An information system is defined as the software that helps organize and analyze data. So, the purpose of an information system is to turn raw data into useful information that can be used for decision making in an organization.

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Infrastructure • Infrastructure consists of physical facilities,

services and management that supports all computing resources in an organization.

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Infrastructure • There are five major components of

infrastructure:• Computer hardware• General purpose software• Networks & communication facilities• Databases• Information management personnel

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Infrastructure • Each of these components is designed in such

manner to collectively meet the needs and objectives of the organization.

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Infrastructure• Infrastructure also includes the integration,

operation, documentation, maintenance and management of the these components.

• To information system users, infrastructure is everything that supports the flow and processing of information.

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Architecture• Architecture is the “Blueprint” that provides the

conceptual foundation for building information infrastructure and specific applications.

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Architecture

• Architecture covers;• business needs for information which is the

requirement of the organization;• existing and planned information infrastructure;

and• applications with in the organization.

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Components/Sub-Systems of CBIS• These are:

• Transaction Processing System• Management Information System• Support Systems

• Office Automation System• Decision Support System

• Knowledge System• Executive Support System

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Transaction Processing SystemTransaction Processing System is used to record transactions of routine and repetitive nature.For Instance

• Defining the transaction recording structure• Placing customer orders

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Data Processing Tasks• Data identification and Gathering – keying in the

data or obtaining it directly from machines by providing suitable interface

• Data manipulation/Analysis – refers to transformation of data into information

• Classifying• Sorting• Calculating• Summarizing

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Data Processing Tasks• Data storage – data is kept somewhere in a

sequenced manner until when needed.• Document Preparation – output for managers as

reports or as input to other systems.

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Management Information SystemMajor purpose is report generation. Major report types include:•Periodic reports – daily, weekly, monthly, annually, format is

predefined and structured for convenience.•Special Reports – Management by Exception reports

only when a special event occurs which needs to be monitored. For instance• Report sequence to highlight – fast moving & slow moving• Group the exceptions together – Aged accounts receivable• Show variance from the norm – Sales analysis report

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