relationship

相关标签：javascript jquery android 多少钱 iPhone

After adding objects via CoreDataGeneratedAccessors to-many relationships's NSSet is empty

I have two Core Data entities: Parent and Child. Parent has to-many relationship to a Child called children. Inverse relationship from is Child.parent. So parent has CoreDataGeneratedAccessors: - (voi[详细]

2023-02-20 06:47 分类：问答
Model with extra columns based on belongs_to model

I am building a products database. Each product belongs to a category. There can only be products under sub-sub-categories. Each Product have attributes like name, ean_number, price, width, height, de[详细]

2023-02-19 19:28 分类：问答
Fluent NHibernate automap inheritance with subclass relationship

I am having an issue with using Fluent NHibernate automapping with Inheritance.Below is my entity setup (abbreviated for simplicity).I have configured Fluent NHibernate to create 1 class for the hiera[详细]

2023-02-18 07:23 分类：问答
SQL - Find all related tags?

I have a relation tag table like below. Relation tag_id \"1\" exists for all three node_id (1,2,3). CREATE TABLE IF NOT EXISTS `relation` ([详细]

2023-02-18 05:15 分类：问答
Storing graph-like structure in Couch DB or do include_docs yourself

I am trying to store network layout in Couch DB, but my solution provides rather randomized graph. I store a nodes with a document:[详细]

2023-02-17 04:49 分类：问答
Zend_DBTable relationships

I know that the question has certainly be asked several times, but I can\'t find (understandable) responses to it.[详细]

2023-02-16 14:05 分类：问答
NSManagedObject Without Inserting It: Related Many

My XML import requires that I check for an existing object before I insert. In other words I need to hold each record in a temporary managed data object before I determine whether to save it or not. *[详细]

2023-02-14 21:41 分类：问答
Mixed relationship in grails application

I have a domain class which is called Ev开发者_开发知识库ent. Event has many registrations, which are users with account on site or people without it. I want registered user to be able to track their[详细]

2023-02-14 20:52 分类：问答
invalid yii relation HAS_MANY

i am having some throuble building a simple Poll application in Yii. I have the following tables: create table poll ([详细]

2023-02-14 20:42 分类：问答
iOS / iPhone CoreData Relationships

I have been trying to find a good CoreData tutorial that focuses on more a开发者_JAVA百科dvanced databases that have one-to-many and many-to-many relationships.From what I\'ve read, CoreData hides the[详细]

2023-02-14 05:29 分类：问答