MySQL is an open-source relational database management system. Uses SQL a query language.It is also available in commercial version. MySQL is currently maintained by the Oracle Corporation.
PostgreSQL is a powerful, open source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.
Both Databases use SQL(Structured Query Language). So syntaxes are identical across both databases. MySQL Query
SELECT * FROM users;
PostgreSQL query:
SELECT * FROM users;
MySQL is an open-source relational database management system. Uses SQL a query language.It is also available in commercial version. MySQL is currently maintained by the Oracle Corporation.
MongoDB is a cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with optional schemas.
Mysql uses SQL(Structured Query Language). So syntaxes are very different across both databases. MySQL Query
SELECT * FROM users;
MongoDb query:
MongoDB is a cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with optional schemas.
Amazon DynamoDB is a fully managed proprietary NoSQL database service that supports key-value and document data structures and is offered by Amazon.com as part of the Amazon Web Services portfolio.
Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker.
Free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.
Dgraph is the most popular graph database out there with over 15k stars on github. Dgraph comes with out of the box support to Graphql.
Neo4j is popular open source Graph Database developed using java programming language.