Assume that you are the project leader for the library book collection management system that you have been developing the system over the several months. However, as you review the current set of models, you realize that even though the models provide a rather complete description of the problem-domain layer, the evolving models have begun to become unmanageable. As project leader, you also need to guarantee that the design will be efficient.

Q1. Describe the software architecture layers and their content for the library book collection management system.