[thelist] Which RDBMS?

[Kasimir K]

Hello,

I'd love to hear your views on different RDBMSs. Are the proprietary 
ones (MS SQL Server, Oracle, ...) better than open source (MySQL, 
Postgre, ...) or are they just more expensive?

My own favorite is MySQL, and from my experience I know that very well 
suffices for small systems like simple CMS etc. But what if I do bigger 
things, where the volume is gigabytes? Or systems requiring transaction 
safe tables and receiving hundreds of queries per second?

gracias,
.k