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
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...
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?
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.
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.
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.
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.
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
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.
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
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