MySQL is a relational database management system. It provides a very fast, multi-threaded, multi-user, and robust SQL (Structured Query Language) database server. MySQL is the most popular open source database, and is the database component of the LAMP software stack. LAMP consists of the Apache web server, MySQL and PHP, the essential building blocks to run a general purpose web server.

MySQL is a relational database management system (RDBMS) based on SQL (Structured Query Language). First released in January, 1998, MySQL is now one component of parent company MySQL AB’s product line of database servers and development tools.

Sun Microsystems, Inc. has announced the general availability of MySQL 5.1, a new version of open source database, designed to improve performance and simplify management of large database applications.

According to a post on the MySQL blog site last night, by MySQL's Vice President for Community Kaj Arno, Sun Microsystems plans to purchase MySQL AB, the commercial firm selling enterprise database products built atop the ubiquitous open source database which represents the M in the LAMP open source software stack.

It can be tempting to throw hardware at MySQL performance problems, but there are ways to tune your SQL database so that it doesn't always need more power. Sean Hull gives some excellent tips on simplifying, strengthening, and speeding up your MySQL database.

With MySQLfs you can store a filesystem inside a MySQL relational database. MySQLfs breaks up the byte content of files that you store in its filesystem into tuples in the database, which allows you to store large files in the filesystem without requiring the database to support extremely large BLOB fields. With MySQLfs you can throw a filesystem into a MySQL database and take advantage of whatever database backup, clustering, and replication setup you have to protect your MySQLfs filesystem.

Mickos [Mårten] was recruited to lead open-source database provider MySQL AB in 2001 by chief technology officer and co-founder Michael “Monty” Widenius, a college classmate. Since then, the MySQL database has become one of the most popular open-source technologies around, used by many of the biggest Web 2.0 sites.

Oracle has promised to continue developing the community edition of MySQL. But you'd better like the architecture and customers that Oracle is targeting. On Sunday, the database giant's chief architect, Edward Screven, committed Oracle to making not only the enterprise edition of MySQL better but also the community version licensed under the GPL.

Twitter, the world's most famous Microblogging service picked Cassandra as alternative to their MySql database system.
Cassandra is a no-sql open source distributed database management system. One of the top-level Apache Software Foundation projects, written in Java and first developed by Facebook to develop their Inbox Search features.