MySQL database (http://www.mysql.com) is the most popular open source database. The wide adoption is mainly because of its low cost and the extensive features for enabling large scale Web applications. MySQL provides community (free) standard, enterprise, and cluster editions. The current major versions are:
- MySQL 5.7.9
- JSON support
- SYS Schema
- Changing the replication master without STOP SLAVE - MySQL 5.6.19
- Provides higher transactional throughput in InnoDB
- Supports new NoSQL-style APIs - MySQL 5.5.38
- Sets InnoDB as the default storage engine.
- Supports for supplementary Unicode character sets utf16, utf32, and utf8mb4.