systems analysis and design introduction 1. content content system analysis and design system...
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SYSTEMS SYSTEMS
ANALYSIS ANDANALYSIS AND
DESIGNDESIGN
INTRODUCTIONINTRODUCTION
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CONTENTCONTENT
System analysis and designSystem analysis and design Diagrams of system analystDiagrams of system analyst System development life cycleSystem development life cycle Sequential SDLCSequential SDLC Principles to guide system analystPrinciples to guide system analyst
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Systems Analysis and Design is the process people use to create (automated) information systems
SystemsAnalysis& Design
InformationSystem
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Information Systems Engineering!Software Engineering!
Information Systems Development!Systems Engineering!
Systems Analysis and Design!
Other names...!
Whichone?
Is there an “official” name?
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A title given to a person who studies the
problems and needs of an organization
looking for improvement opportunities.
Systems AnalystSystems Analyst
Other names:
• Software Engineer• Systems Engineer• Software Developer• Programmer/Analyst• Nerd or Hacker! (joking!)
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An idea Analysis Design andImplementation
CompletedInformation
System
SYSTEMS ANALYSIS AND DESIGN: A Condensed (Informal) Perspective
Time6
SYSTEMS ANALYSIS AND SYSTEMS ANALYSIS AND DESIGNDESIGN: A Complete (Formal) : A Complete (Formal)
PerspectivePerspective
Systems PlanningSystems Planning
Systems AnalysisSystems Analysis
Systems DesignSystems Design
Systems Systems
ImplementationImplementation
Systems EvolutionSystems Evolution
Planning
Evolution
Implementation Design
Analysis
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Systems Analysis and Design is the process people use to create (automated) information systems
people
procedures
data
software
hardware
SA&D
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Systems Analyst’s interactions with people during Systems Analysis & Design
SYSTEMSANALYST
Users*SteeringCommittee*
Vendors
Programmers& Tech. Staff
DatabaseAdministrators
Managers*
* = Stakeholders
Systems Analystmay be acting asa Project Managerfor some of theseinteractions.
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Planning Feasibility Study (optional) Requirements Determination Conceptual Design Physical Design Construction and/or Purchase
(prototype) Training Conversion - old to new Implementation Evolution - maintenance &
enhancements
SYSTEMS DEVELOPMENT LIFE CYCLE (SDLC)SYSTEMS DEVELOPMENT LIFE CYCLE (SDLC)A
naly
sis
Desig
n a
nd
Imp
lem
en
tati
on
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Sequential or Traditional SDLC1. Planning for an information system2. Feasibility Study (optional)3. Requirements Determination (gathering)4. Conceptual design5. Physical design and/or purchase and/or prototyping6. Conversion from current system to new/changed system7. Training8. Implementation9. Evolution for enhancements and maintenance
Waterfall or Staircase SDLCPlanning
Feasibility Study
Requirements DeterminationConceptual Design
Physical DesignConversion
TrainingImplementation
Evolution
“Begin”
“End”
“Begin”
“End”
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Planning
Feasibility Study
Requirements Determination
Conceptual Design
Physical Design
Conversion
Training
Implementation
Evolution
Iterative SDLC
Risk Analysis
Spiral SDLC
SDLC Activities
Verification/Test
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The system is for the user
A Work Breakdown Structure should be used (ie., SDLC)
Systems analysis and design is iterative and overlapping
Information systems are capital investments for the business
Project manager may have the authority to cancel a project
Project documentation is important all along the way
Senior management approval/support is very important
Principles to Guide Systems Analysis & Design
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QUITTING TIME
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