MongoDB CRUD ConceptsΒΆ

The Read Operations and Write Operations documents introduce the behavior and operations of read and write operations for MongoDB deployments.

Read Operations

Introduces all operations that select and return documents to clients, including the query specifications.

Queries return iterable objects, called cursors, that hold the full result set.
Query Optimization
Analyze and improve query performance.
Distributed Queries
Describes how sharded clusters and replica sets affect the performance of read operations.
Write Operations

Introduces data create and modify operations, their behavior, and performances.

Write Concern
Describes the kind of guarantee MongoDB provides when reporting on the success of a write operation.
Distributed Write Operations
Describes how MongoDB directs write operations on sharded clusters and replica sets and the performance characteristics of these operations.

Continue reading from Write Operations for additional background on the behavior of data modification operations in MongoDB.