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Deploying IT resources (MIS 533) MBS in Management Information Systems and Managerial Accounting Systems (2006 / 2007) Fergal Carton Business Information Systems
Deploying IT resources(MIS 533)
MBS in Management Information Systems and Managerial Accounting Systems
(2006 / 2007)Fergal Carton
Business Information Systems
MBS (MIMAS) / MIS533 / Deploying IT Resources
Last week• Course outline
• Introductions
• Assessment dates
• Connolly & Begg handout
• DB’s for speed, volume, reduction of error
• It’s all about managing customers and suppliers
• SMART Telecom, contacting customers when landline suspended?
• SAD methodologies
– Data oriented techniques today
– Importance of
– Reality (moves on) versus system design (once only)
MBS (MIMAS) / MIS533 / Deploying IT Resources
This week
• Assessment dates (updated)• Practicals: confirm groups and times• Recommended reading• Homework: database examples• Analysis & design = listening• Use data to test your design• Applications: trade off design vs. cost• Bad system design• Modelling
MBS (MIMAS) / MIS533 / Deploying IT Resources
Assessment dates (updated)
• A practical exam (20%) which will be the development of a small database from a business scenario – For example, system to support administration of Cork
Film Festival
– Scenario to be distributed by 15th Nov 2006
– Assessment during lab practical 7th / 8th Dec 2006
• An MCQ (20%) in class on 28th February 2007
MBS (MIMAS) / MIS533 / Deploying IT Resources
Recommended reading
• Database Solutions – A step by step guide to building databases
• Thomas Connolly & Carolyn Begg
• Publisher : Addison Wesley
• Concepts of Database Management • Philip Pratt & Joseph Adamski, 4th edition
• Publisher : Thomson Course Technology
MBS (MIMAS) / MIS533 / Deploying IT Resources
Recommended reading
MBS (MIMAS) / MIS533 / Deploying IT Resources
Recommended reading
MBS (MIMAS) / MIS533 / Deploying IT Resources
Topics covered
• SAD methodologies • Infrastructure planning • Strategic dimension of data management• Requirements analysis and systems design• Process modelling • Data modelling • Enterprise systems• Database development (MS Access and Oracle).
MBS (MIMAS) / MIS533 / Deploying IT Resources
Definitons : Analysis & Design
• Analysis : what users need the system to do
• Design : how the system will meet the need
MBS (MIMAS) / MIS533 / Deploying IT Resources
Analysis = listening
MBS (MIMAS) / MIS533 / Deploying IT Resources
Business requirements
MBS (MIMAS) / MIS533 / Deploying IT Resources
What is so difficult about Analysis and Design?
• It involves listening, understanding, documenting and clarifying
• It takes time, patience and humility
• It works best within a framework (methodology)
• Design always influenced by experience
MBS (MIMAS) / MIS533 / Deploying IT Resources
Use data to test your design
MBS (MIMAS) / MIS533 / Deploying IT Resources
Applications : woodworker
CustomerProductScope
ResourcesInvoice
MBS (MIMAS) / MIS533 / Deploying IT Resources
Applications : IT
MBS (MIMAS) / MIS533 / Deploying IT Resources
Applications : IT
CustomerProductScope
ResourcesInvoice
Plan
Buy
Make
Deliver
Bill and collect
Approve & Pay
Report results
Sell
Install
Maintain
Recruit
Train
Reward
Manufacturing
Finance Sales / CS HR
Market
DevelopBudget
MBS (MIMAS) / MIS533 / Deploying IT Resources
Bad systems design?
• Paper based, supporting foreign character sets• MPRN# going digital with intelligent meters• ESB Customer supply
– Customer identification when address changes– Customer identification when mobile no. changes
• Customer identification when they have 2 numbers (FT)• Double booking on airline seats• Difference between customer requirements and order• Sales reporting by customer: Excel• Pharmacy: GMS code gives customer history:
confidentiality
MBS (MIMAS) / MIS533 / Deploying IT Resources
Building a model
• Functional decomposition
• Data Flow Diagram– Context diagram
– Processes
– Data Flow
– Data store
– External entities
F in an ce S h ipp ing P la nn ing
S a les
MBS (MIMAS) / MIS533 / Deploying IT Resources
Example : www.RyanAir.com
MBS (MIMAS) / MIS533 / Deploying IT Resources
Functional decomposition
T icke t is su ed
P a ym e nt
R e se rva tion
F lig h t in fo rm a tio n e nq u iry
P a ssen g er
MBS (MIMAS) / MIS533 / Deploying IT Resources
Context diagram
On-line reservation
systemInternet Users
GlobalAirline seat
booking
MBS (MIMAS) / MIS533 / Deploying IT Resources
Example : www.RyanAir.com
• Input :– Flight details (eg. SNN-BVA, 8 Oct, 10.35)– Credit card details (eg. VISA no, Expiry date)
• Process :– Confirms price (eg. EUR 79)– Makes reservation & processes payment
• Output :– Reservation reference (eg.CGHKCA)
MBS (MIMAS) / MIS533 / Deploying IT Resources
Data Flow Diagram
Flight
details
Lists options
Confirm price
Book now
Outward
Inward
Makes Reservation& payment
Credit
card
Reservation
Stores
Flight
details
