Describing the model

An entity represents persisted data. Keys and relationships describe links; configure deletes and constraints to match domain rules.

Learn
</>
practical skills

Contenu de la leçon

Cette leçon est encore concise. Utilisez le résumé, la vidéo éventuelle et le plan du chapitre pour avancer, puis validez vos acquis avec le quiz disponible.

Describing the model

An entity represents persisted data. Keys and relationships describe links; configure deletes and constraints to match domain rules.

Start with a minimal example, observe the result, then change one thing at a time. This helps distinguish the intended rule from accidental behavior.

Key points

  • Choose explicit names.
  • Verify the result with a simple case.