Great start to learn JDBC. My only complain is that The source code is only accessible in the lab virtual machine. It is very slow, I can't copy and paste from virtual machine to host machine. So, I made a repository for the future learner. https://github.com/hogimn/JDBC.
The intent of Java Database Connectivity (JDBC) Introduction is to get some hands-on experience with foundational JDBC concepts. On our journey we’ll learn about why and how the API makes working with databases easy for Java Developers. After this course you should not only be able to demonstrate the mechanics of JDBC but furthermore, you should be able to explain the design and intent.