MongoDB

Queries documents in a collection with a filter and returns matching results.

Inserts one or more documents into a collection.

Updates documents that match a filter with the supplied update operators or replacement.

Atomically finds one document, applies an update, and returns the pre- or post-image per options.

Deletes documents that match the filter from a collection.

Inserts a document, or merges $set into the existing document matching the filter. Returns whether the document was inserted or updated.