INTEC College offers a number of courses that will give you an overview and an understanding of database design.
INTEC Database Administration Diploma - Job Creator
Good decisions require correct information derived from raw facts known as data. Nothing is more important and more central to an information system than the data in the database. The INTEC Database Administration Diploma provides a solid and practical foundation for the design, implementation and management of database systems. The foundation is built on the notion that, while databases are very practical things, their successful creation and implementation depends on understanding the important theoretical concepts that define them.