OpenLink Software today released version 4.2 of its Universal Data Access Drivers Suite for Mac OS X. The new release includes high-performance Single-Tier Drivers that enable direct access to backend database engines without the installation of any additional software on the Mac OS X clients or the backend database server machines. Supported databases include Oracle, Microsoft SQL Server, IBM, DB2 and Informix, Sybase, CA-Ingres, Progress, PostgresSQL, MySQL and any other ODBC compliant database engine.