Look up how to download and install your preferred database server. A database server is a software system that maintains and manages the database. For our demonstrations, we are going to use PostgreSQL, a free, open source database server.
After the database server is installed, we'll use its console for creating a database and its user with the corresponding permissions. There are many ways to structure the data store and the system of users with different levels of access. In this book, we will introduce only the basic approach, which allows us to demonstrate the main JDBC capabilities.