Foreign keys are a data integrity feature of relational (and SQL) databases.
I have a Comment class with a :foreign_key of post_id in the Post class. class Comment < ActiveRecord::…
ruby-on-rails foreign-keysI am using Entity framework 4.1 in MVC 3 application. I have an entity where I have primary key consists of two …
c# entity-framework ef-code-first foreign-keys composite-keyI need to make some changes to a SQL Server 2008 database. This requires the creation of a new table, and …
sql sql-server foreign-keys foreign-key-relationshipSee the following post for some background: Entity framework one to zero or one relationship without navigation property I had …
c# entity-framework foreign-keys code-first shared-primary-keyWhat is the best way to set a default value for a foreign key field in a model? Suppose I …
django foreign-keys defaultI am using the Django REST Framework 2.0. Here is my model class: class Mission(models.Model): assigned_to = models.ForeignKey(…
django-rest-framework model foreign-keys serializationI have a table called PX_Child that has a foreign key on PX_Parent. I'd like to temporarily disable …
sql-server foreign-keys constraintsI have a backup script for my MySQL database, using mysqldump with the --tab option so it produces a .sql …
mysql command-line foreign-keys mysqlimportI don't have much experience with SQLAlchemy and I have a problem, which I can't solve. I tried searching and …
python filter sqlalchemy foreign-keysIn our database project we have a table Sale that has an primary key and two exclusive foreign keys: Vehicle_…
sql oracle database-design foreign-keys data-integrity