Software Engineering Final Exam| Verified Solution

Software Engineering Final Exam| Verified Solution Name some ways VCS systems help in software development. - Keep records of changes - Allow collaborative development - Know who made changes to what - Revert changes - Build/release management Centralized VCS - Commit directly to remote - Server has main copy - Ex: Subversion Distributed VCS - Commit locally, push and pull to remotes - No one has main copy - Ex: Git What are the advantage of DVCS over Centralized VCS? - Can commit locally and push once you're ready - Don't need internet connection to commit GitHub Workflow (0. Fork if not part of organization) 1. Clone 2. Branch 3. Commit 4. Pull in branch you want to merge to 5. Push to origin (GitHub) 6. Make pull request/get feedback 7. Merge pull request 8. Delete branch Git Branch Split in commit history, lets you work in parallel Git Fork Copy of someone else's repo on GitHub Git Clone Get local copy of repo Git Origin Default remote (GitHub in our case) test bj ;P Git Master Main branch Git HEAD Latest commit of current branch 4 Aspects of a Dependable System Availability Reliability Safety Security (R ASS) Software Quality Measurements 1. Sufficiency 2. Robustness 3. Reliability 4. Flexibility 5. Efficiency 6. Scalability 7. Re-usability 8. Security Be able to read, interpret, modify and create UML use-case diagrams Use case diagrams are a representation of a user's interaction with the system. Similar to user stories but more formal and complex. Includes a summary of usage requirements, from the users point of view, includes the basic course of events as well as alternative paths and preconditions and post conditions. Reliability Measure of the average amount of time between failures Efficiency How well a component satisfies speed or storage requirements Scalability Measure of the ability to use the component as scope increases Flexibility Measure of how adaptable to 'reasonable' changes in a component is Reusability How usable a component is in related applications without modification Robustness How well the component will recover from anomalous events Functional Requirement