What is the difference between:

Student has_and_belongs_to_many :courses
Course has_and_belongs_to_many :students

and

Student has_many :courses, :through => :student_courses
Course has_many :students, :through => :student_courses
Student_courses belongs_to :student
Student_courses belongs_to :course

Thanks.
--
Quiliro Ordусez
09 821 8696
02 340 1517

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