MongoDB CRUD Reference¶

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Query Cursor Methods¶

Name	Description
`cursor.count()`	Modifies the cursor to return the number of documents in the result set rather than the documents themselves.
`cursor.explain()`	Reports on the query execution plan for a cursor.
`cursor.hint()`	Forces MongoDB to use a specific index for a query.
`cursor.limit()`	Constrains the size of a cursor’s result set.
`cursor.next()`	Returns the next document in a cursor.
`cursor.skip()`	Returns a cursor that begins returning results only after passing or skipping a number of documents.
`cursor.sort()`	Returns results ordered according to a sort specification.
`cursor.toArray()`	Returns an array that contains all documents returned by the cursor.

Name	Description
`db.collection.count()`	Wraps `count` to return a count of the number of documents in a collection or matching a query.
`db.collection.distinct()`	Returns an array of documents that have distinct values for the specified field.
`db.collection.find()`	Performs a query on a collection and returns a cursor object.
`db.collection.findOne()`	Performs a query and returns a single document.
`db.collection.insert()`	Creates a new document in a collection.
`db.collection.remove()`	Deletes documents from a collection.
`db.collection.save()`	Provides a wrapper around an `insert()` and `update()` to insert new documents.
`db.collection.update()`	Modifies a document in a collection.

Write Concern: Description of the write operation acknowledgements returned by MongoDB.
Read Concern: Description of the readConcern option.
SQL to MongoDB Mapping Chart: An overview of common database operations showing both the MongoDB operations and SQL statements.
The bios Example Collection: Sample data for experimenting with MongoDB. insert(), update() and find() pages use the data for some of their examples.