Engenharia de Software - Aula 16 - Gerenciamento de configurações (Parte 1)

UNIVESP

22 Sept 201718:52

Summary

TLDRProfessor Marcelo Fantinato's lecture on software engineering discusses configuration management, a critical aspect of software development. He explains that it involves combining different parts of software to create final products, managing versions, and releases. The lecture highlights the importance of tracking changes, integrating components, and ensuring that the final software configuration functions correctly. It also touches on change management processes, emphasizing the need for systematic handling of modifications to maintain control and deliver a quality product to the client.

Takeaways

📚 The lecture is part of a software engineering course at UNIVESP, focusing on 'Configuration Management'.
🔧 Configuration Management is not as intuitive as it seems and is related to the software development process rather than the end-user configuration of software.
🔩 It involves combining different parts of the software to create a final product, which can be done in various configurations based on different versions of components.
🛠️ The purpose of Configuration Management is to ensure that the integrated system works as intended and to maintain control over which version changes are incorporated into each system version.
🔄 Integration and configuration testing are crucial to guarantee that the system functions properly after combining different parts.
📈 Configuration Management includes activities such as version control, change management, and release management.
🔄 Version control is a key aspect of Configuration Management, where each part of the system (code, components, databases, etc.) can have different versions that are combined to form a release.
📝 A 'Release' is a version of the software that is delivered to the client, similar to the concept of 'version' but at the system level.
🔧 Change Management involves a systematic process to handle changes in the software, triggered either by the discovery of defects or by client requests for modifications.
🏢 The Change Control Board (CCB) plays a crucial role in evaluating, prioritizing, and approving or rejecting change requests based on cost-benefit analysis and impact on the system.
📋 Tools are used to support the opening of change requests and the entire lifecycle of the change, from initiation to closure.

Q & A

What is the main topic of the 16th class of the software engineering discipline taught by Professor Marcelo Fantinato?
-The main topic of the 16th class is 'Configuration Management' within the software engineering discipline of the computer engineering course at UNIVESP.
How does the speaker describe the initial perception of 'configuration management'?
-The speaker describes the initial perception of 'configuration management' as something that is not very intuitive. It is often misunderstood as simply configuring software, but in the context of software engineering, it refers to the management of different parts of the software to form the final product.
What are 'configurations' in the context of software engineering?
-In the context of software engineering, 'configurations' refer to different combinations of the various parts of the software. These configurations are used to assemble the final software product that is delivered to the client.
Why is configuration management important in software development?
-Configuration management is important in software development to ensure that the final integrated system works as intended. It helps to control which versions of components are incorporated into each version of the system and prevents the loss of control over changes.
What are the three main activities involved in configuration management?
-The three main activities involved in configuration management are version control, change management, and release management.
What is an 'item of configuration' according to the speaker?
-An 'item of configuration' is any part of the system that can have different versions and that is worked on during development. These items are combined to form a release for the client.
What is the process when a change is needed in the software?
-When a change is needed in the software, a Change Request (CR) is submitted. This request is then analyzed by the development team to determine its validity and impact. A Change Control Board (CCB) evaluates the change, considering factors like cost-benefit analysis, and makes a decision to approve or reject the change.
What role does the Change Control Board (CCB) play in configuration management?
-The Change Control Board (CCB) is responsible for reviewing and evaluating the proposed changes to decide what will be included in the system. They consider the consequences, impact, benefits, and costs of making or not making the change.
How are changes in software development managed systematically?
-Changes in software development are managed systematically through a process that includes registering change requests, analyzing their impact, evaluating them, and making decisions based on cost-benefit analysis. Tools are used to support the opening of change requests and the entire lifecycle of the change.
What is a 'release' in the context of software delivery to clients?
-A 'release' is a version of the software that is made available to clients. It is similar to the concept of a version but refers to the entire system rather than individual components.
What are the two main reasons for changes in software development?
-The two main reasons for changes in software development are the correction of defects, identified either by developers or testers, and requests from the client for the system to be different, not due to a defect but due to a change in requirements or ideas.

Outlines

00:00

📚 Introduction to Configuration Management

This paragraph introduces the topic of configuration management within software engineering. The speaker, Professor Marcelo Fantinato, begins by contextualizing the subject within the curriculum of the computer engineering course at UNIVESP. He explains that configuration management is a concept that might be familiar from previous lessons on the software engineering lifecycle. The professor emphasizes that configuration management is not as straightforward as it seems, as it involves more than just configuring software settings. Instead, it's about managing different versions and components of software during the development process to create final products for clients. The importance of this management is highlighted in scenarios where multiple developers work on different parts of a large software project, necessitating careful integration of various components to ensure the final product functions correctly.

05:00

🔄 Overview of Configuration Management Activities

In this paragraph, the speaker delves deeper into the activities involved in configuration management. He outlines three main aspects: version management, change management, and release management. The professor explains that version management is about keeping track of different versions of software components, while change management involves documenting and controlling changes to the system, whether due to defects or client requests for modifications. The speaker also introduces the concept of a 'release', which is a version of the software delivered to clients. He contrasts this with the concept of 'version', which refers to individual components within the system. The importance of a systematic approach to handling changes is emphasized, to prevent losing control over which changes are incorporated into each system version. The paragraph also touches on the terminology used in configuration management, such as 'configuration item' and 'release', and mentions the use of tools to support the change management process.

10:03

🔧 Change Management Process and Decision-Making

This paragraph focuses on the process of change management within configuration management. The speaker describes the steps involved when a change is requested, such as when a tester identifies a defect or a client requests a modification. The process begins with the submission of a change request (CR), which is then reviewed by the development team. The development team assesses the feasibility and impact of the proposed change, considering factors like the time required for implementation and potential effects on other system components. If the change is deemed valid and beneficial, it is passed on to a change control board (CCB), which makes a collective decision on whether to approve or reject the change. The paragraph highlights the importance of a structured approach to managing changes, as it helps maintain control over the software development process and ensures that changes are made in a controlled and justified manner. The CCB's role is crucial in evaluating the cost-benefit analysis of each change, considering the consequences of not implementing the change, the benefits of making the change, and the costs associated with it. The speaker also mentions the use of tools to support the entire lifecycle of a change request, from submission to decision-making and implementation.

15:04

🚀 Conclusion and Preview of Upcoming Topics

In the final paragraph, the speaker concludes the discussion on change management and provides a brief preview of upcoming topics. He summarizes the key points made about the structured process of handling changes in software development, emphasizing the importance of the change control board's decisions in maintaining the integrity and functionality of the software system. The speaker also mentions that the next lecture will cover the release of versions and the management of distribution networks. This paragraph serves to wrap up the current lesson and set the stage for further learning, encouraging students to continue exploring the complexities of software engineering and configuration management.

Mindmap

Keywords

💡Software Engineering

Software Engineering refers to the application of engineering principles to software development, which includes designing, developing, testing, and maintaining software systems. In the context of the video, the professor is teaching a course on software engineering and discussing the importance of configuration management within this field.

💡Configuration Management

Configuration Management is the process of tracking and controlling changes to software configurations throughout the software development lifecycle. It ensures that all components of a system are properly integrated and that the final product meets the client's requirements. In the video, the professor emphasizes the importance of configuration management in software development and how it helps in managing different versions and parts of software to create a final product.

💡Lifecycle

Lifecycle refers to the series of stages that a project or product goes through from its inception to its retirement. In software engineering, the lifecycle includes stages such as planning, analysis, design, development, testing, deployment, and maintenance. The video script mentions the 'ciclo de vida de engenharia de software', highlighting the professor's discussion on the software engineering lifecycle and the role of configuration management within it.

💡Components

In software development, components refer to the individual parts or modules that make up a larger software system. These can be code libraries, classes, functions, or any other reusable piece of software. The video discusses how different versions of components are managed and combined to form various configurations of the final software product.

💡Release

A release in software development is a version of the software that is made available to users or clients. It represents a collection of configurations or components that have been integrated and tested to form a functional and stable product. The video script uses the term 'release' to describe the final product that is delivered to the client after effective configuration management.

💡Version Control

Version control is a system that manages new versions of files and directories, typically used in the software industry to manage changes to source code over time. It allows developers to track every modification to the code and revert changes if necessary. In the context of the video, version control is a fundamental aspect of configuration management, ensuring that changes to software components are recorded and can be managed effectively.

💡Change Management

Change management is the process of tracking and controlling changes to a system or product. It involves documenting, assessing, and approving or rejecting changes based on predefined criteria. In the video, change management is a key component of configuration management, ensuring that any modifications to the software are properly evaluated and integrated.

💡Integration Testing

Integration testing is a type of software testing that focuses on verifying that the different modules or components of a software application work together correctly once they are combined. It is an essential step in the software development process to ensure that the final product functions as intended. In the context of the video, integration testing is mentioned as a practice that helps confirm the functionality of the system after configurations have been integrated.

💡Change Control Board (CCB)

A Change Control Board (CCB) is a group of individuals who are responsible for reviewing, evaluating, and approving or rejecting changes to a project or system. The CCB ensures that changes are properly managed and that the impact of changes is assessed before they are implemented. In the video, the CCB plays a critical role in the change management process, making decisions on whether to approve changes based on their potential impact and cost-benefit analysis.

💡Cost-Benefit Analysis

Cost-benefit analysis is a process to estimate the potential costs and benefits of a proposed action or decision, such as making a change to a software system. It helps in determining whether the benefits of the change outweigh the costs involved. In the context of the video, cost-benefit analysis is used by the CCB to make informed decisions on whether to approve changes, considering both the potential benefits and the costs of implementation.

💡Release Management

Release management is the process of planning, scheduling, and controlling the delivery of a software release to ensure that it is stable and meets the requirements defined for deployment. It involves coordinating the efforts of various teams and managing the configuration items that make up the release. In the video, release management is a part of configuration management that focuses on delivering a final product to the client by integrating and testing different configurations.

Highlights

Introduction to the topic of configuration management in software engineering.

Configuration management is not as intuitive as it seems and is often misunderstood.

The concept of software configurations involves combining different parts of the software to create a final product.

Different configurations can be created by combining different versions of software components.

The importance of configuration management in large and complex software development projects.

Configuration management ensures that the integrated system functions as intended.

The role of integration and configuration testing in verifying the functionality of the system.

Overview of the activities involved in configuration management, including version control and change management.

Explanation of the term 'item of configuration' and its significance in software development.

The concept of 'version' in the context of software components and its role in tracking changes.

Introduction to 'release' as a term in software delivery to clients.

The process of managing changes in software, including the reasons for changes and the steps involved.

The role of the Change Control Board (CCB) in deciding which changes to implement.

The importance of cost-benefit analysis when considering whether to implement changes.

The use of tools to support the lifecycle of change requests in software development.

The impact of not addressing changes on the software development process.

The conclusion of the lecture and a preview of the next topic: version release and network management.