Foreign keys are a data integrity feature of relational (and SQL) databases.
I'm having some problems creating a foreign key to an existing table in a mysql database. I have the table …
mysql indexing foreign-keysI have these four tables: PRODUCTS --------- PRODUCT_ID PRODUCT_TITLE (other fields) COLORS --------- COLOR_ID COLOR_NAME MATERIALS …
sql join foreign-keys relational-database 3nfI have two MySQL tables: collections and privacy_level. I define them with a foreign key relationship as such: CREATE …
mysql foreign-keysI'm creating a few simple tables and I can't get passed this foreign key error and I'm not sure why. …
mysql foreign-keys mysql-workbenchIn SQL Server, how can I get the referenced table + column name from a foreign key? Note: Not the table/…
sql sql-server foreign-keys information-schemaI have problem with deleting related rows in Entity Framework 4.1. I have tables with relations Book 1<--->* BookFormats …
c# entity-framework foreign-keys cascading-deletesOn our original design we screwed up a foreign key constraint in our table. Now that the table is full …
sql sql-server foreign-keys sql-dropIs there a way to set foreign key relationship using the integer id of a model? This would be for …
django optimization django-models foreign-keysThis is what I'm trying to do: I have 2 tables... CREATE TABLE `parent` ( `id` int(11) NOT NULL AUTO_INCREMENT, `data` …
mysql foreign-keys constraints auto-increment database-relationsI 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-relationship