It was good to be able to learn how to connect two types of databases with JS at once. I didn't know the pros and cons of the two databases, but I was able to learn the general features. You can learn the differences to some extent by implementing the same example with databases with different features. I was able to understand the features a little through the instructor's brief explanation of the two databases. I recommend this to anyone who wants to quickly learn how to connect OrientDB and MySQL with JS.