MySQL Enterprise 5.0 for Unix

MySQL Enterprise Server software is the most reliable, secure and up-to-date version of MySQL for cost-effectively delivering E-commerce, Online Transaction Processing (OLTP), and multi-terabyte Data Warehousing applications. It is a fully integrated transaction-safe, ACID compliant database with full commit, rollback, crash recovery and row level locking capabilities. MySQL delivers the ease of use, scalability, and performance that has made it MySQL the world’s most popular open source database.

MySQL Enterprise Server 5.0 delivers new enterprise features, including:

ACID Transactions to build reliable and secure business critical applications
Stored Procedures to improve developer productivity
Triggers to enforce complex business rules at the database level
Views to ensure sensitive information is not compromised
Information Schema to provide easy access to metadata
Distributed Transactions (XA) to support complex transactions across multiple databases
Pluggable Storage Engine Architecture for maximum flexibility
Archive Storage Engine for historical and audit data
Federated Storage Engine to create a single logical database from many physical servers
Emergency Hot Fix Builds

Timely Updates & Service Packs

As a MySQL Enterprise customer, you will automatically receive both monthly rapid updates and quarterly service packs with the latest bug-fixes and security updates. These frequent releases ensure that the most reliable, secure, and up-to-date version of MySQL Enterprise Server is always available to you. The Software Update Service automatically notifies you of new rapid updates and service packs by sending you alerts via email, pager, or SMS.

Emergency Hot Fix Builds

In the unlikely event that a critical, business-stopping bug is discovered and has not already been fixed in a service pack, MySQL Enterprise customers can request a special hot fix build that resolves the issue. When a mission-critical systems encounter bugs, hot fix builds are invaluable.
MySQL also provides a full suite of database drivers and graphical tools to help developers and DBAs build and manage their MySQL applications

Drivers

MySQL Native C Library
MySQL Drivers for ODBC, JDBC, .NET
Community Drivers for PHP, Perl, Python, Ruby, etc
MySQL Connector/MXJ for deployment as a JMX MBean

Graphical Tools

MySQL Workbench
MySQL Query Browser
MySQL Administrator
MySQL Migration Toolkit

Platforms
For the complete list of supported Operating Systems and CPUs, see Supported Platforms.
http://www.mysql.com/support/supportedplatforms.html