Configuration Management Tutorial 7 IT 323 Software Engineering

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Configuration Management Tutorial 7 IT 323 - Software Engineering 2 1

Configuration Management Tutorial 7 IT 323 - Software Engineering 2 1

� Q 1 Describe 6 essential features that should be included in a tool

� Q 1 Describe 6 essential features that should be included in a tool to support change management processes. 2

Answer � 1. Change request form definition. � 2. Change request validation. � 3.

Answer � 1. Change request form definition. � 2. Change request validation. � 3. Workflow definition – showing the flow of the change request form. � 4. Change costing support. � 5. Change request traceability – ie maintaining information about the changes made to the software to implement the change request. � 6. Change notification and reminders – notification to people involved of work done and reminders to team members who have work to do. 3

Q 2 � Describe the difficulties that may arise when building a system from

Q 2 � Describe the difficulties that may arise when building a system from its components. What particular problems might occur when a system is built on a host computer for some target machine? 4

� Answer � 1. Have all components been included? � 2. Is the right

� Answer � 1. Have all components been included? � 2. Is the right version of all components been included? � 3. Are all configuration/data files included? � 4. Is the right version of the system building tools used? � 5. Are there any problems with full path name references? 5

� Q 3 � Imagine a situation where 2 developers are simultaneously modifying 3

� Q 3 � Imagine a situation where 2 developers are simultaneously modifying 3 different software components. What difficulties might arise when they try to merge the changes that they have made? 6

� Answer � � � There is the usual problem where developers each make

� Answer � � � There is the usual problem where developers each make changes to the same component and these changes are, in some way, incompatible. However, where several components are being changed at the same time, the problems are exacerbated because there may be dependencies between the components that are affected by the changes. For example, say developer A checks out components X and Y and decides to implement a change by changing Y, which depends on a particular feature of X. Developer A checks X and Y back in with no changes recorded as being made to X. Developer B also is working on X and Y and changes both X and Y. However, the changes made to X mean that the assumptions made by Developer A no longer hold. However, incompatibility is not detected as there has only been a single change made to component X With more than 2 components, the problem becomes even worse because of the chains of dependencies that can be introduced. These can be very difficult or impossible to detect automatically. 7

Thank you 8

Thank you 8