| MongoDB | MySQL |
| It uses MongoDB Query Language. | It uses Structured Query language. |
| No restrictions on schema design. | It is pre-defined schema design. |
| It does not support JOIN statements. | It supports the JOIN statements.
|
| It uses role-based access control. | It uses privilege security-based model |
| Performance becomes faster than MySQL. | Performance becomes slower than MongoDB. |
| Key features are Auto sharding, Comprehensive secondary indexes, In-memory speed, Native location, Embedded data models support. | Key features are Triggers & SSL support, provides text searching and indexing, Query caching, Integrated replication support, Different storage engines. |
| It supports built-in Replication, Sharding and auto elections. | It supports Master-Slave Replication. |
| Best fit for unconstructed data, works better for large datasets, High write loads, Data is location-based. | Best fit for data with tables and rows, works better for small datasets, Frequent updates, Modify large volume of records. |
| The community of MySQL is much better than MongoDB. | It has a good active community. |