varsity

I want to create a programmes and courses catalogue. To achieve this I am thinking these steps :

1. Create a content type which contains the programme's details and named it Programme, eg. Bachelor of Engineering.
2. Create another content type which refer the programme as a parent and named it Course, eg. Electronics Lab.
3. Add another reference where the course have dependencies with another course, eg. Electronics Methodologies (a dependency of Electronics Lab)

Is there any module for this or any other way?