Although MS SQL Server Express Edition is a very advanced database and is also free, there is no big reason to move to MySQL 5 now, but still if you have to access databases which are on MySQL 5 you find difficulty in using it with the ObjectDataSources approach.

Michael Washington has written an excellent article on how MySQL 5 can be used with ObjectDataSources in ASP.NET 2.0.

To access the article click here.