Our data model will be simple: a quote will be linked to a customer. This means that a customer can see a set of quotes, and quotes can be seen by a set of customers. In terms of use cases, we want to be able to monetize our API and make the customers pay to access some quote prices. To do so, we will need a sort of whitelist of quotes per customer.
JPA uses a descriptor called persistence.xml, placed in the META-INF repository of resources (or WEB-INF), which defines how EntityManager, which is a class that allows the manipulation of our model, will be instantiated. Here is what it looks like for our application:
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ...
