Full Stack Web Development MASTERY Course - Novice to Expert - Delete Data in MongoDB (CRUD Series)

This video tutorial covers delete operations in MongoDB, including how to delete documents, collections, and databases using the Mongo shell. It explains the use of delete one and delete many functions, and how to drop collections and databases. The tutorial also highlights the importance of setting up the environment correctly and provides a brief overview of future topics like MongoDB Compass.

What is the primary difference between the deleteOne and deleteMany functions in MongoDB?

• deleteOne removes all documents matching the criteria.

• deleteMany removes only the first document matching the criteria.

• deleteOne removes the first document matching the criteria, while deleteMany removes all matching documents.

• deleteMany is used for collections, while deleteOne is used for databases.

What is essential to do before starting the MongoDB shell?

• Delete all existing collections.

• Create a new database.

• Add the MongoDB installation path to the environment variables.

• Install MongoDB Compass.

Which function should be used to delete a single document with a specific type in MongoDB?

• updateOne

• deleteOne

• deleteMany

• drop

What happens if you use deleteMany with an empty filter in MongoDB?

• It deletes all documents in the collection.

• It deletes the first document in the collection.

• It deletes the entire database.

• It deletes only the documents with a specific type.

How can you delete an entire collection in MongoDB?

• Use the drop function on the collection.

• Use the deleteMany function with a filter.

• Use the deleteOne function.

• Use the updateOne function.

What command is used to delete an entire database in MongoDB?

• clearDatabase

• removeDatabase

• dropDatabase

• deleteDatabase

What is the result of using the drop function on a collection?

• It archives the collection.

• It permanently deletes the collection.

• It deletes all documents but keeps the collection.

• It renames the collection.