JPA vs Hibernate

Hi all,

I'm thinking about building a application using just JPA instead of using JPA with Hibernate. My question is how can I access DB with just JPA? Do I have to use JDBC? From what I've been reading Hibernate "facilitates" JPA by providing a mechanism to communicate with DBs (among other things).

thank you for reading

EDIT: Ok, JPA is the specification (can't count how many times I've read this already) and I must use Toplink Essentials, EclipseLink, Hibernate or OpenJPA, and some others. So I guess I'll stick with Hibernate for now. I feel like I'm talking with myself here.