Core Data Relationships in pre-populated SQLite database
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Published on 2010-06-09T03:32:08Z
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2010/06/09
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Hi All,
I'm new to Core Data.
Currently I have following tables on hand:
tbl_teahcer tbl_student tbl_course tbl_student_course_map
----------- ----------- ---------- ----------------------
teacher_id student_id course_id student_id
name name name course_id
teahcer_id
And I'm going to make the xcdatamodel as below:
Course Teacher
------ -------
name name
teacher <<----------> courses
students <<---|
| Student
| -------
| name
|----->> courses
My questions are as follows:
As I'd like to create TableView for Cource Entity, is it a must to create the Inverse Relationship from Teacher to Course, and Student to Course? What is the beneit for having the Inverse Relationship?
I got some pre-defined data on hand, and I'd like to create a SQLite storage for pre-populated source. How can I set up the relationships (both directions) in SQLite?
Thank you for your help!
Regards, Cardinal
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