34_091113_Chpt10_CE19 - Chapter 10 IS Development Ch Ex 19...

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MIS 301 Introduction to IT Management Lizhen Xu IROM Department McCombs School of Business Chapter 10 IS Development Ch Ex 19 Sys Dev Project Mgt
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Class Business Excel #3 Assignment Sorry for the technical problem w/ XL Miner in Millennium Lab Everybody gets 2 extra points! Association rules uploaded to BB->Assignments Only answering the questions will be enough Due Monday (Nov 16), beginning of class, hard copy Next class: IS Development Exercise All participants will get 10 points Winning teams can get bonus points Form a 4-person team
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Recap Association Rule: {Xbox, Game1}E{Game2} Support count of {Xbox, Game1}? Support of {Xbox, Game1, Game2}? Confidence? Lift ratio? How to interpret the confidence level? 3 0.4 2/3 = 0.67 0.67 / 0.6 = 1.12
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Difference b/w software development and systems development? Development involves all 5 IS components Requires more than technical expertise • Establish systems goals Setting up the project Determining project requirements Requires business knowledge and management skill Information systems are never just off-the-shelf ; they involve your company’s people and procedures What is Systems Development?
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Major System Development Challenges
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Why is IS Development Difficult? 1. Difficulty of determining requirements 2. Requirements change as system develops 3. Schedule and budget difficult to estimate They change as project scope changes 4. Technology changes – how do you adapt? Change when technology changes? Keep re-starting? How many times will you need to rebuild the data model? 5. Diseconomies of scale As development teams grow, average contribution per worker decreases Brooks’s Law – adding more people to a late project makes the project later
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Brooks’s Law “Adding more people to a late project makes the project later” As development teams grow, average contribution per worker decreases Potential problems with a larger group: Coordination Training (Only existing team members can train new people) Economy of scale up to a point, (say, 20 people), beyond that diseconomies of scale take over. “Nine women cannot make a baby in one
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This note was uploaded on 12/17/2010 for the course MIS 03765 taught by Professor Xu during the Fall '09 term at University of Texas at Austin.

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34_091113_Chpt10_CE19 - Chapter 10 IS Development Ch Ex 19...

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