Dropping a Collection — MongoDB Technical Interview Questions & Answers

db.collection.drop() removes a collection entirely.

Dropping a Collection

  • Simple meaning: db.students.drop() removes the collection and its documents and indexes.
  • How to use: after a messy practice, drop and insert again. Database stays.
  • Common mistake: dropDatabase when you only wanted one collection.
  • Interview tip: drop = that collection only.

Technical Interview Tip: drop() vs dropDatabase().

Code Examples for Dropping a Collection

Dropping a Collection — working example

db.users.drop()

Dropping a Collection — drop() removes the collection and its indexes.

How to Explain Dropping a Collection to an Interviewer

What does collection.drop() remove?

That collection’s documents and indexes