Node.js API Masterclass with Express and MongoDB - Populate, Virtuals & Cascade Delete
Interactive Video
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Information Technology (IT), Architecture
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University
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Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using Mongoose virtuals in the context of boot camps and courses?
To store additional data in the database
To automatically update related documents
To create fields that are not stored in the database
To improve database performance
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you populate only specific fields of a boot camp in a course document?
By using a custom query
By using the 'populate' method with an object specifying fields
By using the 'populate' method with a string
By using the 'select' method directly
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main challenge when implementing reverse populate with virtuals?
It can only be used with specific data types
It involves creating virtual attributes not stored in the database
It needs a custom schema for each model
It requires additional database storage
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is used to create a virtual field in a Mongoose schema?
schema.define()
schema.create()
schema.virtual()
schema.add()
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of setting 'virtuals' to true in the toJSON and toObject options?
To enable automatic updates of virtuals
To improve query performance
To store virtuals in the database
To ensure virtuals are included in JSON and object outputs
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of Mongoose middleware in the context of deleting boot camps?
To prevent deletion of boot camps
To log all delete operations
To cascade delete related courses
To backup data before deletion
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which middleware type is used to perform actions before a document is removed?
post
pre
save
delete
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