A quote from http://www.dbmaker.com/prodinfo/datasheet.html
"DBMaker is an SQL Database Management System built around a tightly integrated, modern database engine. Designed from the ground up for today's data management needs, DBMaker is not burdened by the limitations of earlier SQL engines. As a result it seamlessly blends a wealth of advanced features with a full complement of traditional database functions, providing unmatched flexibility and power. With a native ODBC interface, multimedia capabilities, large database features, and cross-platform support, DBMaker integrates multimedia and traditional database functions in an affordable, easy-to-use package..."
DBMaker for Linux is free (of charge).