foreign-keys

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ERROR 1005 (HY000): Can't create table '......\issue.frm' (errno: 150)

This is the SQL: CREATE TABLE user ( userID INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY NOT NULL, username VARCHAR(100) NOT NULL,[详细]

2023-04-08 07:38 分类：问答
django foreign key admin interface and models structure

(All code is some 开发者_开发百科kind of pseudocode, just for better reading I have an Invoice model:[详细]

2023-04-07 22:59 分类：问答
Populating foreign key on create action

I have a Evaluation similar to this: Evaluation.rb has_one :cardio has_one :neuro Cardio.rb belongs_to :evaluation[详细]

2023-04-07 18:17 分类：问答
Entity Framework 4.1 Foreign Key question

I\'m trudging ahead with an ecommerce database desgin in EF 4.1 Code First. I\'ve come to a situation where I think I\'m justified, but not sure..[详细]

2023-04-07 02:21 分类：问答
MySql Foreign keys: ON DELETE NO ACTION behavour - how to leave info in referenced field?

I have two tables, one \'users\' and one \'orders\', where the order table has a foreign key reference to the u开发者_Python百科ser id table. (I\'m using email address as user id in this case.)[详细]

2023-04-06 10:35 分类：问答
Can I change a varchar constraint in SQL Server 2005 after I have defined my PK's and FK's?

Can I change a va开发者_运维问答rchar constraint in SQL Server 2005, after I have defined my PK\'s and FK\'s?[详细]

2023-04-06 10:21 分类：问答
Data Web Controls Display Value vs Insert ID (foreign key) for Stored Procedures

I\'ve got a series of comboboxes made from ASP.NET开发者_StackOverflow社区 DropDownLists (populated from a select command from an SqlDataSource by DataSourceID), and <input> element, and the jQuery[详细]

2023-04-06 10:07 分类：问答
How to show foreign key in django-piston rest output instead of related object data

I use latest django-piston 0.2.3rc1 (but may downgrade if needed). class MaintenanceHandler(CsrfExemptBaseHandler):[详细]

2023-04-06 02:14 分类：问答
Use DD view all_constraints to check if a FK constraint would work

My professor whom is teaching a database course asked the following question - currently I have no idea where to start as this seems like an unusual question to ask.[详细]

2023-04-05 20:09 分类：问答
The Link Between Webform Combobox Data and the Database (SQL Server & ASP.NET)

The title, while long, pretty much says it all. What I have is a master table with a bunch of supporting table relations through foreign keys. For a few of the foreign tables, upon attempting to inse[详细]

2023-04-05 17:45 分类：问答