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.
for item in data: category_id = item['category_id'] del item['category_id'] category = Category.objects.get(pk=category_id) …
django many-to-many modelsI have two objects which form a parent-child relationship which have a many-to-many relationship. Following the recommendations in the Hibernate …
java hibernate many-to-many cascade orphanI want to persist my entity with ManyToMany relation. But i have some problem during persisting process. My entities : @Entity @…
java jpa many-to-many unique-constraint duplicatesIn Django, when you have a parent class and multiple child classes that inherit from it you would normally access …
python django many-to-manyNew to Hibernate. I have User Group many to many relation. Three tables : User , Group and UserGroup mapping table. Entities: @…
java hibernate orm many-to-many hibernate-mappingI have a object with a many-to-many relation with another object. In the Django Admin this results in a very …
django django-admin django-forms many-to-many django-widgetThe context I have a simple association between two entities - Category and Email (NtoM). I'm trying to create web …
hibernate spring-mvc jpa many-to-many hibernate-mappingI'd like to create a many-to-many relationship from and to a user class object. I have something like this: class …
python django django-models many-to-manyI have two tables/collections; Users and Groups. A user can be a member of any number of groups and …
mongodb many-to-many relational-database document-databaseBelow is my model: public class TMUrl { //many other properties //only property with type Keyword public List<Keyword> …
c# entity-framework many-to-many ef-fluent-api