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Systems Analysis & Modelling
Systems Analysis ActivitiesGather detailed information | Interviews, questionnaires, documents, observing business processes, researching vendors, comments and suggestions | Define requirements | Modeling functional requirements and non-functional requirements | Prioritize requirements | Essential, important, vs. nice to have | Develop user interface dialogs | Flow of interaction between user and system | Evaluate requirements with users | User involvement, feedback, adapt to changes |
StakeholdersInternal – persons within the organization
External – persons outside the organization
Operational – persons who regularly interact with the system
Executive – persons who don’t directly interact, but use the information or have financial interest |
Persons who have an interest in the successful implementation of the system
Information Gathering TechniquesInterviewing users and other stakeholders | Distributing and collecting questionnaires | Review inputs, outputs, and doc | Observe & document business processes | Research vendor solutions | Collectt active user comment / suggestions |
| | What Are Requirements?Functional Requirements | – the activities the system must perform. Business uses and functions system must carry out | Non-Functional Requirements | Other system characteristics. Constraints and performance goals. |
FURPS+ Requirements Acronym
Reasons for ModelingLearning from the modeling process
Reducing complexity by abstraction
Remembering all the details
Communicating with other development team members
Communicating with a variety of users and stakeholders
Documenting what was done for future maintenance/enhancement |
Interviewing Users and Other StakeholdersPrepare detailed questions | Meet with individuals or groups of users | Obtain and discuss answers to the questions | Document the answers | Follow up as needed in future meetings or interviews |
| | Some analysis and design models 1
Some analysis and design models 2
Some analysis and design models 3
Some analysis and design models 4
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https://www.speedwell.com.au
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