MongoDB-Mongoose101

What is Mongoose in the context of MongoDB?

• A GUI tool for managing MongoDB databases.

• An ODM library for MongoDB and Node.js

• A database clustering solution

• A schema-less database engine

Which feature of Mongoose helps in defining the structure of the documents within a collection?

• Model Validation

• Schema Definition

• Query Building

• Data Aggregation

Why would you use Mongoose instead of the native MongoDB driver in a Node.js application?

• It provides a GUI for database management

• It allows for schema enforcement and validation

• It is faster than the native driver

• It supports SQL queries

What is a virtual in Mongoose, and how is it used?

• A special field that exists only in the application's memory, not in the database

• A method to create indexes on fields

• A feature to define relationships between documents

• A way to handle transactions in MongoDB

How do you create a model from a schema in Mongoose?

• mongoose.createModel('ModelName', schema)

• mongoose.model('ModelName', schema)

• mongoose.newModel('ModelName', schema)

• mongoose.makeModel('ModelName', schema)

How does Mongoose handle relationships between documents in MongoDB?

• By embedding documents within each other

• By using virtuals to simulate joins

• By referencing documents through ObjectIds

• All of the above

Which Mongoose feature allows for the automatic population of referenced documents?

• Middleware

• Hooks

• Virtuals

• Populate

Which option sets a field as required in a Mongoose schema?

• { required: true }

• { mandatory: true }

• { necessary: true }

• { compulsory: true }

How do you connect to a MongoDB database using Mongoose?

• mongoose.start()

• mongoose.db('mongodb://localhost/mydb')

• mongoose.connect('mongodb://localhost/mydb')

• mongoose.init('mongodb://localhost/mydb')

Why did the MongoDB document go to therapy?

• It had too many issues

• It was feeling unstructured

• It couldn't find a primary key

• It had a complex relationship