What is Drizzle?
Drizzle is a lightweight open source database management system in development based on MySQL 6.0. Drizzle is a slimmed-down version of MySQL 6.0 aimed at the Web application and cloud computing markets, where users want software with less computing overhead.
MySQL 6.0 features removed from Drizzle include stored procedures, query cache, prepared statements, views, triggers, and grants. Drizzle also differs from MySQL in its use of a micro kernel architecture that makes it more modular. In addition, Drizzle is optimized for multi-core processors and uses fewer data types and engines.
The Drizzle development community is writing the software in C and C++, with support for many UNIX-like operating systems, including Linux, Solaris and Mac OS X. No Windows support is planned. As of October 2008, no release date was scheduled.