HNC Computing (Systems Support), Castle College 2009-2010 1 Systems Analysis Lecture 1 Introduction How business use IS Role of Analyst

HNC Computing (Systems Support), Castle College 2009-2010HNC Computing (Systems Support), Castle College 2009-2010 11

Systems AnalysisSystems AnalysisLecture 1Lecture 1

Introduction Introduction

How business use ISHow business use IS

Role of AnalystRole of Analyst


What is Systems Analysis?What is Systems Analysis?

Live DemonstrationLive Demonstration


Lecture ObjectivesLecture Objectives

Tutor IntroductionTutor Introduction

Module Structure and Program Module Structure and Program

Assessment Methods and Assessment Methods and weightingweighting

Introduction to Information Introduction to Information SystemsSystems


Tutor IntroductionTutor Introduction

TrainingTraining

Work experienceWork experience

WelcomeWelcomeFeedbackFeedback


Module StructureModule Structure

Subject areas:Subject areas: Understanding the Systems Analysis Understanding the Systems Analysis

Life CycleLife Cycle

– Understand systems analysis tools Understand systems analysis tools and techniquesand techniques

– Perform a system investigationPerform a system investigation

– Perform functional and data Perform functional and data modellingmodelling


Class StructureClass Structure

6-9 pm, one break6-9 pm, one break LecturesLectures TutorialsTutorials Lab work / Assignment workLab work / Assignment work Varying combinationsVarying combinations


Assessment Methods and Assessment Methods and weightingweighting

Four Assignment projectsFour Assignment projects Equal weightingEqual weighting Some individual work and Some individual work and

some team work.some team work. Terminology!Terminology!


Reference MaterialsReference Materials LibraryLibrary Recommendations with each subject Recommendations with each subject

areaarea Recommended text booksRecommended text books

BTEC Higher National in Computing, Pearson BTEC Higher National in Computing, Pearson Education Ltd, (List of referenced books)Education Ltd, (List of referenced books)

Systems Analysis and Design, D. Yeates, Pitman Systems Analysis and Design, D. Yeates, Pitman Publishing, 1994, ISBN 0273600664Publishing, 1994, ISBN 0273600664

Computers: Information Technology in perspective Computers: Information Technology in perspective (12(12thth Ed), Larry & Nancy Long, Pearson Education Ltd, Ed), Larry & Nancy Long, Pearson Education Ltd, ISBN 0 13 143235 4ISBN 0 13 143235 4

Shelley Cashman & Rosenblatt (6th Ed), Thomson Shelley Cashman & Rosenblatt (6th Ed), Thomson Course Technology (2006), Course Technology (2006), ISBN 0-619-25510-2ISBN 0-619-25510-2


Lesson ObjectivesLesson Objectives

Examine impact of Information Examine impact of Information Technology on businessTechnology on business

Look at how businesses use Look at how businesses use Information SystemsInformation Systems

Consider the effects of the Internet Consider the effects of the Internet on business needson business needs


Reality of Information Reality of Information SystemsSystems


Reality of Information Reality of Information SystemsSystems

SystemsAnalysis


Impact of ITImpact of ITDramatic example of how Information Dramatic example of how Information

Technology affects businessTechnology affects business


Information in businessInformation in business

Increase productivityIncrease productivity Deliver quality products and Deliver quality products and

servicesservices Maintain customer loyaltyMaintain customer loyalty Make sound decisionsMake sound decisions Compete in a global economyCompete in a global economy

Companies use information as a Companies use information as a weapon in the battle to weapon in the battle to


Information – vital assetInformation – vital asset

Used effectivelyUsed effectively Updated constantlyUpdated constantly Safeguarded carefullySafeguarded carefully

Most companies treat information as Most companies treat information as a vital asset which must bea vital asset which must be

Hence the importance of effective Hence the importance of effective Information SystemsInformation Systems


Development of ISDevelopment of ISTraditionallyTraditionally

Develop own in-houseDevelop own in-house

Purchase Software PackagesPurchase Software Packages

Now greater choiceNow greater choice

Internet based application ServicesInternet based application Services

OutsourcingOutsourcing

Custom solutions from IT consultantsCustom solutions from IT consultants

Combinations of theseCombinations of these


““You delivered what I asked for You delivered what I asked for but it is not what I wanted”but it is not what I wanted”

The greatest risk occurs when a company The greatest risk occurs when a company tries to decide tries to decide howhow the system will be the system will be implemented before determining implemented before determining whatwhat the the system is supposed to do.system is supposed to do.

To avoid this we have to begin by To avoid this we have to begin by outlining a company’s business needs and outlining a company’s business needs and identifying possible solutionsidentifying possible solutions


Understanding the BusinessUnderstanding the Business Unique information requirementsUnique information requirements Business ModelsBusiness Models

““A business model is a graphical A business model is a graphical representation of one or more business representation of one or more business processes that a company performs” processes that a company performs” - Shelley Cashman et al p8- Shelley Cashman et al p8

Business ProfileBusiness Profile ““A business profile is an overview that A business profile is an overview that describes a company’s overall functions, describes a company’s overall functions, services, products, customers, suppliers, services, products, customers, suppliers, competitors, constraints and future direction” competitors, constraints and future direction”

- Shelley Cashman et al p8- Shelley Cashman et al p8


Business Process ModellingBusiness Process Modelling

Business ProfileBusiness Profile Business PractisesBusiness Practises


DiscussionDiscussion

Choose one business typeChoose one business type Thought shower:Thought shower:

What typical Business Processes What typical Business Processes would this organisation want to would this organisation want to perform?perform?

Feedback (& technique)Feedback (& technique)


Business Operations - TPSBusiness Operations - TPS

Transaction processing (TP) systems Transaction processing (TP) systems process data generated by day to day process data generated by day to day business operationsbusiness operationsE.g. Customer order processing, processing E.g. Customer order processing, processing Claims under warrantee, etcClaims under warrantee, etc

One of the most important areas of One of the most important areas of Information managementInformation management

Transaction processing can involve Transaction processing can involve thousands of transactions each daythousands of transactions each day


TPS ExampleTPS Example


Business OperationsBusiness Operations

Internet based commerceInternet based commerce e-commerce (electronic commerce)e-commerce (electronic commerce)

i-commerce (internet commercei-commerce (internet commerce

B2B – Business to BusinessB2B – Business to Business

B2C – Business to ConsumerB2C – Business to Consumer


B2CB2C Traditional sales / servicesTraditional sales / services

Internet – on-line shoppingInternet – on-line shopping Enormous variety of products and Enormous variety of products and

servicesservices

Create attractive sites that increase Create attractive sites that increase online salesonline sales

B2C commerce is changing B2C commerce is changing traditional business models traditional business models


B2BB2B

B2B allows companies of any size B2B allows companies of any size to access the Global marketplace to access the Global marketplace (online trading)(online trading)

The volume of B2B transactions is The volume of B2B transactions is much greater than that of B2C much greater than that of B2C

Enables instant information about Enables instant information about market prices and availabilitymarket prices and availability


Growth Areas in Systems Growth Areas in Systems DevelopmentDevelopment

Internet based system Internet based system developmentdevelopment

Software servicesSoftware services

(e.g. Internet systems with Web pages, (e.g. Internet systems with Web pages, levels of data management software and levels of data management software and web based database server)web based database server)


In ConclusionIn Conclusion

Examined the impact of IT on Examined the impact of IT on businessesbusinesses

Examined how modern businesses Examined how modern businesses use Information Technologyuse Information Technology

Considered how the Internet has Considered how the Internet has effected modern business needs effected modern business needs and practiceand practice

Documents

HNC Computing (Systems Support), Castle College 2009-2010 1 Systems Analysis Lecture 1 Introduction How business use IS Role of Analyst