The persistence layer is always a necessity for any real software project in which you need to access and save your data somewhere.
In this chapter, we are going to analyze the new Daniel’s Delivery application and define the data access using relational databases and JPA over Jakarta EE. We will discover entities to map our requirements and understand how we can connect to a data source, creating basic CRUDS structures. As you will see in detail with both the entity modeling and implementation process, this chapter ...
