http://oak.cs.ucla.edu/cs144/projects/tomcat/index.html

Developing a Web Appliction on Tomcat

In this tutorial, you will learn how to develop a Web application for Tomcat using Java servlet and Java ServerPages (JSP) technologies and package it as a Web application archive file. Before you get started if you do not know how to start/stop the Tomcat server on our VM, please read the Tomcat startup instruction.

http://zetcode.com/db/mysqljava/

MySQL Java tutorial

This is a Java tutorial for the MySQL database. It covers the basics of MySQL programming with Java. In this tutorial, we use the MySQL Connector/J driver. It is the official JDBC driver for MySQL. The examples were created and tested on Ubuntu Linux. You might also want to checkJava tutorial, PostgreSQL Java tutorial, Apache Derby tutorial or MySQL tutorial on ZetCode.

JDBC

JDBC is an API for the Java programming language that defines how a client may access a database. It provides methods for querying and updating data in a database. JDBC is oriented towards relational databases. From a technical point of view, the API is as a set of classes in the java.sql package. To use JDBC with a particular database, we need a JDBC driver for that database.