Nt1310 Unit 1 Assignment 1

Good Essays
Introduction to SAD

LIS 163 Sir Igor

Introduction




Companies use information as a weapon in the battle to increase productivity, deliver quality products and services, maintain customer loyalty, and make sound decisions. Information technology can mean the difference between success and failure

The Impact of Information Technology
Information Technology






Combination of hardware and software products and services that companies use to manage, access, communicate, and share information A vital asset that must be used effectively, updated constantly, and safeguarded carefully

The Impact of Information Technology


The Role of SAD



Systems Analysis and Design Systems Analyst
● ●

Step-by-step
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A system designed to meet the unique requirements of a specific business or industry, such as a Web-based retailer or video rental chain.

The Impact of Information Technology


Information System Components


Data




Processes


Is the raw material that an information system transforms into useful information Define the tasks and business functions that users, managers, and IT staff members perform to achieve specific results Users, or end users, are the people who interact with an information system, both inside and outside the
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J.D. Naumann and A.M. Jenkins. 1982.

CASE Tools

Computer-Aided Software Engineering ● Software tools providing automated support for systems development ● Project dictionary/workbook: system description and specifications ● Diagramming tools


Joint Application Design (JAD)
Structured process involving users, analysts, and managers ● Several-day intensive workgroup sessions (intensive structured meetings) ● All people affected by IS in one room all at the same time ● Purpose: to specify or review system requirements ● “Shared understanding”


Rapid Application Development (RAD)
Methodology to decrease design and implementation time ● Involves: prototyping, JAD, CASE tools, and code generators


Agile Methodologies
Motivated by recognition of software development as fluid, unpredictable, and dynamic ● Three key principles ● Adaptive rather than predictive ● Emphasize people rather than roles ● Self-adaptive

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