It seems that the fashion came to rubyonrails, was looking at something and this is my first impression.-

What I Find Here.....

• Ruby Web framework
• Rails: Complete API
• Ruby Core
• Ruby Standard Lib
• Agile web development
• A public snnipets
• And more...

and otrher much tutorials scattered over the Internet.

Finaly rails supported values are mysql, oracle, postgresql, sqlite2, and sqlite3.
I saw the vertical drop as it's title; web development that dosen't hurt./ You know something else that can help...