how to delete all collections in mongodb code example

Example 1: mongodb delete all documents

db.collection.delete_many( { } );

Example 2: mongo delete all documents

db.bios.remove( { } )

Example 3: mongodb delete all documents

# To remove all documents in a collection, call the remove method with an empty query
# document {}. The following operation deletes all documents from the bios collection:

db.bios.remove( { } )