relationships

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Setting SQL Relationships For LINQ Queries

I have two tables that I\'m trying to create a relationship between so I can write nice LINQ queries that don\'t require join.[详细]

2022-12-30 02:34 分类：问答
Core Data migration of to-one relationship to to-many relationship

I have a deployed app that samples measurements from sensors (e.g., Temp °C, Pressure kPa). The user can create Experiments and collect samples. Each sample is stored as a Run, such that there is a o[详细]

2022-12-29 08:44 分类：问答
Database many-to-many relationships

I have a student and faculty table. The primary key for student is studendID (SID) and faculty\'s primary key is facultyID, naturally. Student has an advisor column and 开发者_如何学编程a requested ad[详细]

2022-12-29 07:32 分类：问答
Why do I get two clicked or released signals when using a custom slot for a QPushButton?

here\'s the main code at first I thought is was the message box but setting a label instead has the same effect.[详细]

2022-12-23 23:43 分类：问答
Stop a master page from auto-correcting or adjusting URLs

How can I stop a master page from auto-correcting or adjusting my urls? I am using a site map and when the master page is in another directory, it messes it up the urls.[详细]

2022-12-21 15:48 分类：问答
CakePHP Relationship Question

I am trying to configure CakePHP to act as a REST API for an app i\'m writing. I have 3 tables: dishes {[详细]

2022-12-19 05:24 分类：问答
Name a reference in ActiveRecord

in my rails app, I have an Organization model, wi开发者_StackOverflowth a reference to a User, which I want to be able to access via organization_instance.adminstrator. I\'m not sure how to accomplish[详细]

2022-12-17 08:34 分类：问答
How can I delete an entry from a HABTM join table in rails?

Through many iterations of testing, I just noticed that my join table that represents a HABTMrelationship between two models isn\'t removing entries when instances of these models get deleted. 开发者_[详细]

2022-12-14 08:28 分类：问答
iPhone coredata fetch request, basics around relationships and sections

I\'ve got what is hopefully a simple question - I\'ve got two entities - List and ListItem - and there\'s a one-to-many relationship set up between them, all good.[详细]

2022-12-11 12:01 分类：问答
PHP Doctrine - YAML syntax help. Default value for many to many relationship?

I have the following YAML schema for organising users in Doctrine: Person: tableName: people columns开发者_如何转开发:[详细]

2022-12-11 04:14 分类：问答