AJAX / jQuery和MySQL？

Can AJAX communicate with MySQL directly? For example, I just have a simple text box and with a trigger of a function it checks the database if the word is in there. If I wanted to use JSP, how will it be implemented? Can it be possible with jQuery? Or could I just create a JSON with all the words I have?

Thanks.

AJAX can communicate back to the web server. The web server can then communicate to the db. No direct connection between AJAX and the db. Exposing your db is probably a security risk anyway.

No, AJAX can't communicate with MySQL directly. You will always need a driver for MySQL. CouchDB can be accessed by HTTP, so with CouchDB it is possible! (CouchDB+Jquery=jqCouch)

AJAX runs clientside, and the code can be modified by any client that executes it. You should not have a direct connection to your database using AJAX, always put a server-side script in between to protect your database.

Even if it were technically possible, you should not be doing this.

As others have already said, you can't connect to MySQL from JavaScript directly.

If you want a database that can do that then you can try CouchDB. In fact, this is how Futon works.