Imagine that you are a software engineer at a mid-sized organization, identify one key function or process that you have to perform in your job, and draw a use-case diagram and a set of activity diagrams to show this function or process. Note: Include a screenshot to show your work.
Analyze why it is important to use use-case diagrams and activity diagrams in the requirements gathering process. Speculate the consequence of performing requirements gathering without using a use-case. Include an example to support your response.