Time to clear some things up. A rush of concern popped up on Twitter this morning about Oracle dropping support for InnoDB. This is not the case.

Here's what is really happening. InnoDB is free as part of the MySQL community edition, under a GPL license. For enterprise support, InnoDB is included with the exception of the Classic Edition, which uses the MyISAM storage engine.

The classic edition is an embedded database for ISVs, OEMs and VARs. It does not include InnoDB. Supported versions with InnoDB include the standard edition that costs $5,000 and a high-end version that comes with a price tag of $10,000.

InnoDB is a storage engine for MySQL. It had historically been available for all binaries of MySQL.

Here is the chart in question, which had many people a bit confused. It has since been updated with clarification about what is included in the classic edition.

InnoDB became a product of Oracle Corporation after its acquisition of Innobase in 2005.

MySQL had been managed by Sun Microsystems until its acquisition by Oracle earlier this year. Since then, Oralce has methodically moved toward making MySQL a profit center.

Our apologies for any confusion on this matter.