Accessing data with MySQL I'm following the Getting Started | Accessing data with MySQL (spring.io) guide. Important commits Bidirectional @ManyToMany: 4543e5be199af0f94e291b7f38522dddf1d4e0bd Bidirectional many-to-many with a link entity: c8f78f5cb4d0bedf2cb84d896f9c11125085acba