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Chapter 27 Change Management

Change is an inherent aspect of the software life cycle, and effective Software Configuration Management (SCM) is essential for handling these changes. This chapter outlines the fundamental components of SCM, including software configuration items (SCI), baselines, and the change management process. Key practices such as version control, change control procedures, configuration auditing, and reporting mechanisms are explored. By understanding these principles, organizations can efficiently adapt to changes, ensuring that software remains reliable and meets evolving requirements.

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Chapter 27 Change Management

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  1. Chapter 27 Change Management

  2. No matter where you are in the system life cycle, the system will change, and the desire to change it will persist throughout the life cycle. Bersoff, et al, 1980 The “First Law” 1/4

  3. Software Configuration Items (SCI) programs documents data 27.1 Software Configuration Management • Software Configuration: The items that comprise all information produced as part of the software process (programs, data, documents, and more …) are collectively called a software configuration. • Baselines (IEEE Std. No.610.12-1990): A specification or product that has been formally reviewed and agreed upon, that thereafter serves as the basis for further development, and that can be changed only through formal change control procedures. 2/4

  4. modified Project database SCI approved baselined SCM controls reviews SCI SCI SCI need change 27.1 Software Configuration Management SCI Baselines: System Specification Software Requirements Design Specification Source Code Test Plans / Procedures / Data Operational System 3/4

  5. 27.3 The SCM Process • Identification: How does an organization identify and manage the many existing versions of a program (and its documentation) in a manner that will enable change to be accommodated efficiently? • Version Control: How does an organization control changes before and after software is released to a customer? • Change Control: Who has responsibility for approving and ranking changes? • Configuration Auditing: How can we ensure that changes have been made properly? • Reporting: What mechanism is used to appraise others of changes that are made? 4/4

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