relationship

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Objective C - Core Data relationship

i\'ve a problem with Core Data relationship. I pass to my method addData an array of data. It is an array of dictionary. Every dictionary have 3 keys, \"A\", \"B\", \"C\". Key C store another array of[详细]

2023-03-01 11:11 分类：问答
Can't make relationship with phpMyAdmin

Whenever i t开发者_运维知识库ry to make a relationship, i only get an empty pop-up and nothing happens...[详细]

2023-03-01 04:32 分类：问答
LBA and cluster

I wonder about LBA and cluster number. My question is this: is LBA 0 always cluster 2? then what does cluster 0 and 1 for?[详细]

2023-02-28 17:00 分类：问答
Ruby on Rails 3 - New to Rails - Understanding Relationship for Ratings Application

I\'ve decided to build my newest site using Rails 3.This is my first experience with Rails and wanted to get the communities opinion on how to do the following scenario.[详细]

2023-02-27 03:34 分类：问答
Rails has_one, include or join

I was wondering whats the best way to set up this DB structure in Rails 3... I have a users table and a user_profiles table.[详细]

2023-02-26 05:15 分类：问答
Any tools for relationship between XML files

I have a set of XML configuration files, which are long and complex. The structure is that some attributes are defined in a parent xml and are imported and overridden by the children xml.[详细]

2023-02-25 08:24 分类：问答
Core data migration involving a new entity and a to-many relationship

I am attempting to add a new entity (say B, with two \"double\" attributes) to my core data model and create an optional to-many relationship with an existing entity (say A)开发者_StackOverflow中文版.[详细]

2023-02-22 11:59 分类：问答
ActiveRecord Query with many to many or other Params

I got 2 Models Projects (with a boolean column \"hidden\") Models the both have a many to many relation开发者_开发问答ship, so i added a migration with a projects_users table and changed the model[详细]

2023-02-21 19:45 分类：问答
cakePhp adding record problem

I have 3 tables: item{name,id,category_id} category{id,name,section_id} sections{id,name} As you can see, each item is related to a category, and each category is related to a section.[详细]

2023-02-20 12:57 分类：问答
CoreData: inverse relationship no set automatically

I\'ve got a very strange situation: in one app I have lots of CoreData entities. Few pairs of them are connected by one-to-one relationships with inver开发者_C百科se relationships. They are kind of pa[详细]

2023-02-20 07:11 分类：问答