Dear @CS319-23-SP/t1-havuz
First feedback to your D4 is as follows:
[x] Please add headings for Connectors, Architectural Style and Design Goals.
[x] Connectors.
[x] Subsystem Decomposition Diagram.
[x] Some functionalities are missing in the diagram. (e.g. Admin only has access to student CRUD Interface.)
[x] A subsystem decomposition diagram is intended to make a complex system easier to understand. There is no need to specify authentication or other permission-related steps in this diagram. Instead, try to develop a hierarchy to explain your complex system more clearly.
It is in Docs file, in 2 parts.