Avoid UUID Version 4 Primary Keys (for Postgres)
Introduction Over the last decade, when working on databases with UUID Version 41 as the primary key data type, these databases have usually had bad p...
Summary
To-many associations in Hibernate can be mapped with List, Set, Bag, or Map collections, but Map is generally not recommended due to added overhead.
Mapping many-to-many associations as a List causes inefficient database operations when removing elements, as Hibernate deletes and reinserts all association records. Using a Set is recommended for many-to-many associations because it results in more efficient and minimal database changes.