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.
What is the related_name argument useful for on ManyToManyField and ForeignKey fields? For example, given the following code, what …
python django many-to-many foreign-key-relationshipIn which case do you use the JPA @JoinTable annotation?
java hibernate jpa many-to-many hibernate-mappingI have this scenario: public class Member { public int MemberID { get; set; } public string FirstName { get; set; } public string LastName { …
c# entity-framework ef-code-first many-to-manyOk so this is probably a trivial question but I'm having trouble visualizing and understanding the differences and when to …
java hibernate orm many-to-many one-to-manyI'm using EF4 and new to it. I have a many to many in my project and cannot seem to …
c# entity-framework many-to-manyMy database contains 3 tables: User and Service entities have many-to-many relationship and are joined with the SERVICE_USER table as …
hibernate jpa mapping many-to-many jointableThere is a handy dynamic attribute in active-record called find_or_create_by: Model.find_or_create_by_<attribute&…
ruby-on-rails activerecord model many-to-many dynamic-attributesHow would I delete an object from a Many-to-Many relationship without removing the actual object? Example: I have the models …
django many-to-manyI believe the title is self-explanatory. How do you create the table structure in PostgreSQL to make a many-to-many relationship. …
sql database postgresql database-design many-to-manyI am trying to filter a bunch of objects through a many-to-many relation. Because the trigger_roles field may contain …
python django django-models many-to-many django-orm