Differences between MongoDB, CouchDB, and MySQL

MongoDB is an extensible, high-performance, open source NoSQL database, written in C + + language.

Characteristics of MongoDB

Document oriented

Documents (objects) map well to programming language data types

Embedded file and array reduction requires joins

Dynamic typing (modeless) facilitates schema evolution

No linking high performance and no easy to expand multi-document transactions

Performance

No connection and embedding makes reading and writing faster

Index of indexes that include keys from embedded documents and arrays

Optional stream write (not confirmed)

Indexes include indexes from embedded document and array keys

Optional stream Write (unacknowledged)

High Availability

Replication server for automatic master failover

Easy to scale

Automatic fragmentation (automatic segmentation of data across servers)

Read and write over fragment distribution

No joins or multiple document transactions make distributed queries fast and easy

Final consistent reads can be distributed across replication servers

Rich Query Language