Deploying IT resources ( MIS 533 )

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

• Practicals: confirm groups and times

– Tues 12.00 -13.00 Group B Visio and Access Run & Aoife– Tues 13.00 – 14.00 Group A Oracle and SQL Brian & Una

– Wed 12.00 -13.00 Group A Visio and Access Run & Aoife – Tues 13.00 – 14.00 Group B Oracle and SQL Brian & Una

• More database examples• Analysis & design = listening• Narrative analysis rules• Data tables (columns and rows)• Relational model of linked tables (improve performance)• Use data to test your design• Applications: trade off design vs. resources• Modelling (eg. architects models of buildings) communicates design


This week

• More system design examples• Building models• Abstract thinking• User interface design rules• Tutors• Visio narratives• RyanAir example


More systems design examples

• Quality Assurance database for cheese samples (volume)

• Gathering customer order details into one system: late changes!

• Survey questionnaire processing application: correlations

• Payroll application, dealing with events (emergency tax, P30, …)

• Supermarket point of sale system, activating new products (special offers)


Bad systems design

• SNCF : ticketing system

• Bank of Ireland on-line (what direct debits are on my account?)

• ERP systems: getting reports out

• Your own examples?


. . . The design of your software's interface, more than anything else, affects how a user interacts and therefore experiences your application.

Tandy Trower, 1994


User Interface Design Rules• Rule 1

– Making the Interface Simple

• Rule 2 – Allowing Users to Be in Control of the

Software


Rule 1 : Making it simple

• Making the Interface Simple– KISS, Keep It Simple and Straightforward

• Are all fields or choices in your application necessary?– Making the Interface Transparent and Natural

• Don’t clutter the interface – Labels, static text, check boxes, and option buttons

• Can user look at screen and figure out what to do?


Rule 1 : Making it simple


Rule 2 : Users in control

Some of the ways to put users in control are:

• Making the interface forgiving• Making the interface visual• Providing immediate feedback• Avoiding “Modes”

– A mode is something you must cancel before doing something else

• Making the interface consistent


Rule 2 : Users in control


Your tutorsVisio – Access• Run Zhang• Aoife Mac Sharry

SQL - Oracle• Una Dunne• Brian Cummins


Visio narratives• Grocery Store

• ATM

• Budget monitoring

• RyanAir ticket purchase

• Purchase request and payment

• UCC travel requisition

• Film festival


Visio & database manuals• Katie Dineen

– Room 3818 ORB

– By end of week


Building a model

• Process Flow

• Data Flow Diagram– Context diagram

– Processes

– Data Flow

– Data store

– External entities


Example : www.RyanAir.com


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)


Process flow

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


Context diagram

On-line reservation

system

Passengers Flight Operations

Flight Schedule

Flight reservation

Reservation #Accounts

Payment

€

Timetable

Seat availability

Reservations

Seat prices


Purchase request and payment• Departments make spending requests• Budget is checked in the allocated budget file• If budget exceeded, request is rejected• Approved requests are stored and used to create

Purhcase orders (PO’s) for suppliers• Goods received notes (GRN) are matched with

PO’s to identify any discrepancies• When supplier invoice is received, 3 way match is

made between PO, GRN and invoice prior to payment

Deploying IT resources ( MIS 533 )

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