one-to-one

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Django: following the reverse direction of the one-to-one relationship

I have a question about the way Django models the one-to-one-relationship. Suppose we have 2 models: A and B:[详细]

2023-04-07 20:16 分类：问答
Delete OneToOne relationship

We have the following mapping: @Entity public class A { private B b; @OneToOne public B getB() { return b; }[详细]

2023-04-07 16:59 分类：问答
Mongodb 1 to 1 embedding

I am new to developing with mongodb.This may be a noobish question but I was wondering what the benefit in creating a 1:1 embedding is in mongodb? Why is usef开发者_运维问答ul over attributes which ho[详细]

2023-04-06 02:57 分类：问答
Hibernate one-to-one and one-to-many

I currently have a one-to-many relation between 2 table: I have: Table A (id, ...) Table B (tableAId, ...) (has no id of it\'s own).[详细]

2023-04-06 02:54 分类：问答
error saving OneToMany and ManyToMany relationship with Doctrine 2

I have a problem with \"Doctrine2\". When attempting to save a relationship \"ManyToMany\" or \"OneToOne\" PHP leave exception error! I leave the error so that you can help me.[详细]

2023-04-05 14:56 分类：问答
Handling One to One foreign key relationships - LightSwitch

I am currently trying to add a one to one foreign key relationship in LightSwitch. It is be开发者_如何学编程tween an ID and a username. Ideally I would be able to show the username wherever the relate[详细]

2023-04-03 12:22 分类：问答
Multiple relationships with single mapping table without generating foreign keys by Hibernate

I have two base abstract classes and there are multiple additional classes derived from these two, adding additional attributes etc.[详细]

2023-04-02 09:07 分类：问答
Fluent NHibernate Uni-Directional one to one mapping

I cant get at One-to-One relationship working with Fluent NHibernate. I haveUser and UserDetails tables and they \'share\' a primary key. How do I map them?[详细]

2023-04-01 06:25 分类：问答
SQL One-to-Many Table vs. multiple one-to-one relationships

I\'m working on a project with the following objective: A User can create a Challenge and select an optional Rival to take part of this challenge. The Challenge generates Daily entries and will track[详细]

2023-03-30 06:39 分类：问答
What is the significance of specifying a relationship as 'One to One' in JPA?

i created a class @Entity public class **Department** implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO)[详细]

2023-03-30 00:24 分类：问答