Sql :: Learning Ruby To Use Serverside To Manage An Existing Database?

I am very much a beginner to rails and I have a specific need for it. I wish to connect it to a flex app, and also use it to call a database.

For example when the following web page is visited: ?User=bob&id=4&lic=234 Take 'bob' and 4 and add them to an existing database table if the license number is valid and not already used. I don't want to use the standard database stuff, I will need to write my own SQL queries as well as have logic for checking other stuff to do with registering users etc. It is already done with Coldfusion but I am having issues with it, and would like to have it work with Ruby instead.

But to start with, I just want the ability to call a web page (on localhost:3000) get the string after the URL "?User=bob&id=4&lic=234" in this case and output "User:bob id:4" to the screen. I want to learn what the code is doing rather than have the least lines of code solution. I would rather use as little of the rails framework to do this as this will help me learn the language. I won't be making the standard website so learning the rails framework won't be so useful to me.

looking for, however I am having problems connecting with databases, mysql in this case:

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