This is a vague question about user experience and interaction design patterns (not programming) for CRUD web applications.
Let there are few simple entities, e.g. Student, Course, and Lecturer with obvious relations.
As I understand, a CRUD application usually provides a screen per entity to browse entities, update, remove them, and add a new one. The screen may provide also a search box.
The application GUI uses relations to display entity-related information (e.g. courses per student) and navigate from one entity screen to another (e.g. from a Student's course name in the Student screen to the Course description in the Course screen).
Does it make sense ? Are there other GUI patterns for CRUD applications ? What example would you recommend to learn from ?
the frameworks like rails generate some scaffolding pages to add /delete/modify the model objects, i'd suggest you to have a look at it .