Market Share of Open-Source Databases
| MySQL remains on top as the #1 free and open source database, representing over 30% of open source database use. This comes as no surprise, as MySQL has held this position consistently for many years according to DB-Engines. |
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In addition, NoSQL is usually associated with Apache Hadoop framework, which allows for the distributed storage and processing of large datasets across clusters of computers using simple programming models. Another snapshot of open-source databases in 2018 is given below. MySQL is used more frequently from the RDBMS collection but when it comes to NoSQL databases, MongoDB is used at a higher rate, while the second popular one is CouchDB.
| Both databases are known to provide a high performance and availability when it comes to scalable databases. That is why NoSQL is favored by enterprises, which own huge amount of data like big data. |
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The small and medium-size businesses may prefer MySQL instead. MongoDB and CouchDB work in the concept of collection and document. Although both databases have similarities, they include major differences as per the requirements of business.