Which Database is good for client / server application

I am new for the online application on vb.net. I want to create Client/Server Application in vb.net. Firstly I was trying MS Access for this task, unluckily MS Access not suitable for this task, because MS Acccess is not client/server database.

Now I need to go another option, So please give me your idea that Which is suitable and good database for client/server application.