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SOFTWARE CONFIGURATION MANAGEMENT

Dr. Noman Islam

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INTRODUCTION

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  • Chapter covers Software Configuration Management (SCM).
    • Focus on managing software artifacts and changes.
    • Ensure system integrity and traceability.
  • Importance of SCM.
    • Prevents conflicts and inconsistencies.
    • Supports teamwork and version control.
  • Goal.
    • Learn SCM processes, tools, and best practices.
    • Maintain product quality and reliability.

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SCM OVERVIEW

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  • Definition of SCM.
    • Managing changes to software artifacts.
    • Maintaining integrity and traceability.
  • Objectives.
    • Control versions of components.
    • Coordinate team activities.
  • Role in SDLC.
    • Integrated throughout development lifecycle.
    • Supports process improvement and auditing.

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SCM ACTIVITIES 1

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  • Configuration identification.
    • Define baselines for software items.
    • Assign unique identifiers to artifacts.
  • Change control.
    • Track changes systematically.
    • Ensure proper authorization and review.
  • Configuration status accounting.
    • Record current and historical versions.
    • Track implementation of changes.

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SCM ACTIVITIES 2

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  • Configuration audits.
    • Verify compliance with specifications.
    • Ensure completeness of deliverables.
  • Build management.
    • Automate compilation and integration.
    • Ensure consistent builds across environments.
  • Release management.
    • Plan, schedule, and track releases.
    • Coordinate deployment to users.

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VERSION CONTROL BASICS

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  • Purpose of version control.
    • Track changes to software artifacts.
    • Support collaborative development.
  • Types of version control systems.
    • Centralized (e.g., SVN).
    • Distributed (e.g., Git).
  • Benefits.
    • Maintain history and rollback capability.
    • Reduce conflicts in team development.

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BRANCHING AND MERGING

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  • Branching strategy.
    • Create parallel development lines.
    • Isolate experimental changes.
  • Merging changes.
    • Integrate modifications from multiple branches.
    • Resolve conflicts systematically.
  • Benefits.
    • Supports parallel development.
    • Facilitates experimentation without breaking mainline.

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BUILD MANAGEMENT

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  • Automate build process.
    • Compile code automatically.
    • Generate executables consistently.
  • Build scripts and tools.
    • Makefiles, Ant, Maven.
    • Ensure repeatable builds.
  • Benefits.
    • Reduce manual errors.
    • Ensure consistent and reproducible software artifacts.

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CHANGE CONTROL PROCESS

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  • Request and track changes.
    • Submit change requests formally.
    • Document rationale and impact.
  • Review and approve changes.
    • Evaluate necessity and risk.
    • Obtain stakeholder approval.
  • Implement and verify changes.
    • Apply change carefully.
    • Validate correctness post-change.

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SCM TOOLS

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  • Examples: Git, SVN, Mercurial.
    • Provide version tracking and branching.
    • Support collaboration and integration.
  • Build automation tools: Jenkins, Maven.
    • Automate compilation and testing.
    • Integrate with version control.
  • Change management tools: Jira, Bugzilla.
    • Track defects and changes.
    • Coordinate tasks and approvals.

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CONFIGURATION AUDITS

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  • Functional configuration audit.
    • Ensure software meets functional requirements.
    • Verify that features are correctly implemented.
  • Physical configuration audit.
    • Check artifacts against specifications.
    • Verify completeness and correctness.
  • Benefits.
    • Detect inconsistencies and gaps.
    • Ensure software integrity.

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RELEASE MANAGEMENT

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  • Plan and schedule releases.
    • Coordinate with stakeholders.
    • Ensure readiness of components.
  • Track release status.
    • Monitor deployment progress.
    • Maintain version history.
  • Benefits.
    • Ensure smooth deployment.
    • Reduce post-release issues.

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SCM IN AGILE

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  • Continuous integration.
    • Automate builds and tests frequently.
    • Ensure rapid feedback on changes.
  • Lightweight change control.
    • Minimal overhead for small teams.
    • Rapid adaptation to evolving requirements.
  • Version tracking in sprints.
    • Track changes per iteration.
    • Maintain baseline artifacts.

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SCM BEST PRACTICES

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  • Maintain a clear baseline.
    • Define stable versions.
    • Track changes systematically.
  • Automate where possible.
    • Build, test, and deployment automation.
    • Reduce human errors.
  • Document changes and decisions.
    • Ensure traceability.
    • Support audits and reviews.

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CHALLENGES IN SCM

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  • Handling concurrent changes.
    • Resolve merge conflicts efficiently.
    • Ensure communication among developers.
  • Tool integration.
    • Ensure SCM works with build and testing tools.
    • Avoid fragmented workflows.
  • Process discipline.
    • Maintain adherence to defined procedures.
    • Prevent ad-hoc changes and inconsistencies.

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CHAPTER SUMMARY

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  • SCM ensures controlled software evolution.
    • Track versions and manage changes.
    • Maintain integrity and quality.
  • Use tools, audits, and processes effectively.
    • Version control, build management, release planning.
    • Change control and documentation.
  • Best practices and discipline improve SCM.
    • Facilitate teamwork and collaboration.
    • Reduce defects and deployment issues.