A type of relationship between entities of types A and B which associates a list of entities of type B to an entity of type A and vice versa
One-to-many is relationship between two different object properties.
|Associations always better||
"Using two one-to-many associations is always better than relying on many-to-many relations"
from question "How to join tables on non Primary Key using JPA and Hibernate"
"Iâ ve read a so questionâ s comment where inserting order# 68 as pictured wouldnâ t cause any trouble but if i wanted to query orders by certain tags a many-to-many is more appropriate convenient efficient since otherwise in a one-to-many every single order will have to be checked to know how its tags is this true"
from question "What are the consequences of violating a one-to-many relationship & when to use a many-to-many?"