In short
Create, Read, Update, Delete — the fundamental operations for working with MongoDB documents, using methods like `insertOne`, `find`, `updateOne`, `deleteOne`.
How to learn this
- 1Practice each CRUD operation against a local MongoDB collection.
- 2Learn the query operators (`$gt`, `$in`, `$regex`) for more advanced `find` queries.
- 3Compare `updateOne` vs `updateMany` and when each applies.
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