How do you delete a document in the DB?

To delete a document in MongoDB, use deleteOne() and deleteMany().

#Deleting one document:

MongoDB finds the first document matching the filter and deletes it.

#Deleting several documents:

Every document matching the condition gets deleted.

#A note on the logic:

• the first argument is a filter that selects which documents to delete,
• deleteOne() deletes only one document,
• deleteMany() deletes every document that matches.

So, to delete data in MongoDB, it's enough to apply one of these two methods with the right filter.