week 3 discussion plagiarism free

"Use Case Description versus Activity Diagram"  Please respond to the following:

• Compare a use case description and an activity diagram. Devise a scenario in which you would use a case description, and devise a scenario in which you would use an activity diagram.
• Consider a system needed to store information about computers in a computer lab at a university, such as the features and location of each computer. Ascertain the domain classes that might be included within the domain model. Discuss whether or not you believe an entity-relationship diagram (ERD) would be a suitable model.