Foreign keys are a data integrity feature of relational (and SQL) databases.
I have two entities in my MVC application and I populated the database with Entity Framework 6 Code First approach. There …
asp.net-mvc entity-framework ef-code-first foreign-keys foreign-key-relationshipI have a database with schema public and schema_A. I need to create a new schema schema_b with …
postgresql database-schema foreign-key-relationship postgresql-9.1I'm following the instructions from the SQLite documentation at http://www.sqlite.org/foreignkeys.html however my attempt to add …
android sql sqlite foreign-key-relationship create-tableWhy can you not have a foreign key in a polymorphic association, such as the one represented below as a …
ruby-on-rails database foreign-key-relationship polymorphic-associationsI have studidtemplates table below: template_id is the primary_key I want to create a new table referencing template_…
postgresql foreign-keys foreign-key-relationship pgadminI have the situation: Table1 has a list of companies. Table2 has a list of addresses. Table3 is a N …
postgresql sql-order-by left-join foreign-key-relationship duplicate-removalI would like to drop the foreign key in my table but been into this error message mysql> alter …
mysql foreign-keys foreign-key-relationship mysql-error-1025Can I make SQL sub queries in Check constraint ? I've a post table with columns id, owner I've another table …
postgresql foreign-key-relationship plpgsql check-constraintsI have been successfully using NHibernate for quite some time now and have been able to solve a lot of …
nhibernate mapping foreign-key-relationshipI'm having a little difficulty getting my head around relationships in Django models. Could someone explain what the difference is …
python django many-to-many foreign-key-relationship one-to-one