Access database using Java from HTML webpage

Hi,
I've got to create some online maths tests to be taken by students with their marks being stored in a database.
I've wrote some simple java code which can add/remove and modify entries in a test mySQL database that I made. What I now need to do is be able to add entries to the database from a html page.
The math tests will be java applets with the students having to interact according to questions, press submit and their score will be output. The score will then be entered into the database.
The problem I'm having is that with an Applet their are all sorts of security issues (I'm having problems getting images to load in an Applet) so assume I'll face the same security issues when I try to access a database through an applet.
So, could someone please help get started.
Cheers

MVC - I assume you mean model-view-control and not Marvel vs Capcom :)
If so then does this mean I should completely seperate the user interface (the actual applets that will contain the test), the database (that will store the results) and the link between the two?
is it possible to acheive this using Java, Java Applets, Java Script and the database (in my case mySQL) and could you give me some tips on how best to tackle the problem.
Thanks

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