MS Access is easier to use because it has an interface to create the database and reports are stored in a database file.The more powerful for large companies listed below.
2. Microsoft SQL server.
In my point of view Oracle 10G is the best DBMS solution. Because now days Object oriented data model is the getting popular. Because it has some kind of abstarction data rather than using long term entity models. Oracle 10G is the fully fledge object oriented database solution system.
I think MySQL is one of popular database system. It provide some great feature. It is also most prefer by a people. I have used this tools which is very beneficial for keeping a data. It provide some good security and one of the best database management system.