How do you manage changes and updates to the functions in functional decomposition?

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Functional decomposition is a technique for breaking down a complex system or process into smaller and simpler components that can be understood and managed more easily. It is often used in systems analysis, software engineering, and project management to define the scope, requirements, and design of a system. But what happens when you need to change or update the functions in your functional decomposition? How do you ensure that your changes are consistent, coherent, and compatible with the rest of the system? In this article, we will discuss some tips and best practices for managing changes and updates to the functions in functional decomposition.

本文章的要点总结

Use traceability matrices:

These tools map the connections between different parts of your system, helping you understand how a change in one area might ripple through to others. They're a bit like detective work for your project!
Prioritize effectively:

Before chatting about changes with stakeholders, sort them by urgency and importance using the Eisenhower matrix. It's like organizing your closet by season and color – it just makes finding what you need easier.

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Olena Bochulia, PhD ????

Turning Software Ideas into Concrete…
Veronika Anisimkova

Business System Analyst | Tech Business…

1 Identify the impact

Before making any changes or updates to the functions in your functional decomposition, you need to identify the impact of those changes on the system as a whole. You need to consider how the changes will affect the inputs, outputs, data, resources, and dependencies of the functions, as well as the goals, objectives, and expectations of the stakeholders. You can use tools such as traceability matrices, impact analysis diagrams, or change request forms to document and assess the impact of the changes.

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Olena Bochulia, PhD ????

Turning Software Ideas into Concrete, Ready-to-Execute Projects | CEO at Severus
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From experience, even small changes can affect more than anticipated. Use traceability matrices and impact analysis to understand these effects thoroughly. Consider not just the immediate technical effects but also how they affect user workflows and future updates. Prioritize communication with all stakeholders to ensure changes align with broader objectives and maintain system integrity. Documenting everything meticulously helps avoid future pitfalls and makes the system more adaptable to change.

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Zahra Soleimani Heydari

Senior Business and Systems Analyst | Software Engineer | "International Senior Business and Systems Analyst | Expertise in Global Software Engineering, Business Process Optimization, and Systems Analysis"
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As a systems analyst who bridges the gap between stakeholders and the business. After holding meetings with the stakeholders and receiving the system changes, I first check the impact of the changes with a logical look at the requirements. Then I prioritize the changes and choose the most important ones. This choice, of course, will be based on its importance from the customer's point of view and sustainability.

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2 Communicate the changes

Once you have identified the impact of the changes, you need to communicate them to the relevant parties involved in the system development or maintenance. You need to inform them of the reasons, benefits, risks, and implications of the changes, as well as the timeline, budget, and quality implications. You also need to solicit their feedback, input, and approval for the changes. You can use tools such as change logs, status reports, or meetings to communicate the changes.

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Veronika Anisimkova

Business System Analyst | Tech Business Analyst in Fintech mobile apps | Mentor | Speaker
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The stage of communicating with stakeholders and the business about the impact of changes on the system is a complex one. I believe it is crucial to be well-prepared for this stage. As a systems analyst, I should to have a reasoned understanding of these changes. Therefore, I recommend conducting initial prioritization (at least using the Eisenhower matrix) to immediately highlight the most important changes. Typically, I also incorporate the level of importance from the client's perspective and in terms of quality attributes (such as system stability and load). This makes it easier for the business to either agree or challenge my vision, meaning we are already very close to reaching a decision and forming the correct backlog of tasks.

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3 Implement the changes

After you have communicated the changes, you need to implement them in a systematic and controlled manner. You need to follow the established procedures and standards for modifying the functions in your functional decomposition, such as coding, testing, documenting, and deploying. You also need to ensure that the changes are aligned with the system architecture, design, and specifications. You can use tools such as version control, configuration management, or quality assurance to implement the changes.

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Nazir Magsi

Consulting, Analytics, and Project Management: Driving Success in Research and IT Industries. Developing project challenging seismic science paradigms, targeted to redefine seismic energy as a renewable resource.
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Using of few more technics on the stage of implementation of changes and updates to the functions: CI/CD, Rollout Strategy, Monitoring and Alerting mechanisms Use Continuous Integration/Continuous Deployment pipelines to automate the build, test, and deployment processes, helps streamline the delivery of changes, reduces the risk of human error, and enables faster feedback loops. Plan a rollout strategy for deploying the changes to production. This may involve gradual deployment to a subset of users, monitoring for any issues or performance impacts, and scaling up to full deployment once confidence is gained. Implement monitoring and alerting mechanisms to detect any issues or anomalies in the system after the changes have been deployed.

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4 Review the changes

After you have implemented the changes, you need to review them to verify that they have achieved the desired outcomes and met the requirements and expectations of the stakeholders. You need to evaluate the performance, functionality, usability, and reliability of the functions after the changes, as well as the impact on the system as a whole. You also need to identify any issues, errors, or gaps that may arise from the changes and resolve them accordingly. You can use tools such as testing, validation, or evaluation to review the changes.

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5 Document the changes

Finally, you need to document the changes that you have made to the functions in your functional decomposition. You need to update the relevant artifacts and records that reflect the current state and structure of the system, such as diagrams, models, specifications, or manuals. You also need to document the rationale, process, and results of the changes, as well as the lessons learned and best practices for future reference. You can use tools such as documentation, reporting, or archiving to document the changes.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How do you manage changes and updates to the functions in functional decomposition?

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1 Identify the impact

2 Communicate the changes

3 Implement the changes

4 Review the changes

5 Document the changes

6 Here’s what else to consider

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