Information Systems next lecture

8/18/2019 Information Systems next lecture

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InformationSystems

IT-2410


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Rapid Application Developmen

Agile Development• Rapid application development (RAD):

• Employs tools, techniques, and methodologies designed to application development

• Other approaches to rapid development:

• Agile development

• Extreme programming (X)


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Outsourcing and On!Deman

"omputing• Reasons #or using outsourcing and on!demand comp

approaches:

• $o reduce costs

• $o o%tain state!o#!the!art technology

• $o eliminate sta&ing and personnel pro%lems

• $o increases technological 'exi%ility


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actors A&ecting ystems

Development uccess• uccess#ul systems development:

• Delivers a system that meets user and organi*ational needtime and +ithin %udget

• "ritical #or most systems development proects:

• -etting users and sta.eholders involved


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Degree o# "hange

• "ontinuous improvement proects have a high degresuccess

• /anaging change

• Essential to recogni*e and deal +ith existing or potential p


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$he 0mportance o# lanning

• $he %igger the proect:

• $he more li.ely that poor planning +ill lead to signi1cantpro%lems

• 0mportant #actor #or systems development success:

• Organi*ational experience +ith the systems development p


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2se o# roect /anagemen

$ools• roect schedule:

• Detailed description o# +hat is to %e done

• roect milestone:• "ritical date #or completion o# a maor part o# the proect

• roect deadline:• Date that the entire proect is to %e completed and operatio

• "ritical path:• Activities that, i# delayed, +ould delay the entire proect


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2se o# roect /anagement $oo

(contd3)• rogram Evaluation and Revie+ $echnique (ER$)

• "reates three time estimates #or an activity

• hortest possi%le time

• /ost li.ely time

•4ongest possi%le time

• -antt chart

• -raphical tool used #or planning, monitoring, and coordinaproects


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2se o# "omputer!Aided o#t+a

Engineering ("AE) $ools• "AE tools

• Automate many tas.s required in a systems development e

• Encourage adherence to D4"

• 2pper!"AE tools

• "AE tools that #ocus on activities associated +ith the earlstages o# systems development


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ystems 0nvestigation

• 5hat primary pro%lems might a ne+ or enhanced sysolve6

• 5hat opportunities might a ne+ or enhanced systemprovide6

• 5hat ne+ hard+are, so#t+are, data%ases,telecommunications, personnel, or procedures +illimprove an existing system or are required in a ne+system6

• 5hat are the potential costs (varia%le and 1xed)6

•5hat are the associated ris.s6


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0nitiating ystems 0nvestigat

• ystems request #orm:

• illed out %y someone +ho +ants 0 department to initiatesystems investigation

• 0n#ormation included:

•

ro%lems in or opportunities #or system• O%ectives o# systems investigation

• Overvie+ o# proposed system

• Expected costs and %ene1ts o# proposed system


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READING FOR NEXT CLA

1Feasi!i"ity Ana"ysis2O!#e$t-Oriente% Systems De&e"o'm


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Documents

Information Systems next lecture