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Question 53/92
Let's consider a one-to-many relationship observed between an instructor and the courses he is created on an e-learning platform. We assume that a course can only have one instructor, and an instructor can have multiple courses. Which of the following are the correct ways to represent this one-to-many relationship with a document model in MongoDB?
Correct Answer: A,B
Embed all the fields for a course as a subdocument in the corresponding instructor document.
These subdocuments must be put into an array, not stored directly as a subdocument in its parent.
This way we can have a variable number of referenced documents and use a multi-key index to search the "many" side. This is not the best way to do it.
https://docs.mongodb.com/manual/tutorial/model-embedded-one-to-many-relationships-between-documents/
These subdocuments must be put into an array, not stored directly as a subdocument in its parent.
This way we can have a variable number of referenced documents and use a multi-key index to search the "many" side. This is not the best way to do it.
https://docs.mongodb.com/manual/tutorial/model-embedded-one-to-many-relationships-between-documents/
- Question List (92q)
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- Question 42: Use case: e-learning platform Which of the following scenari...
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- Question 49: We have a movies collection with the following document stru...
- Question 50: Use case: e-learning platform Which of the following scenari...
- Question 51: Which of the following commands will add a collection that i...
- Question 52: Data modeling. You are considering the use of nesting or the...
- Question 53: Let's consider a one-to-many relationship observed between a...
- Question 54: Select all true statement regarding to the MongoDB (BSON, JS...
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