A constraint is a condition that has to be fulfilled in a given context.
I've got two foreign keys in a table. Let's assume that table is called News and has foreign keys updatedById …
sql-server tsql foreign-keys constraints cascadeI have a table with a character varying(12) field in it which is its PRIMARY KEY. I ran this query …
postgresql inheritance foreign-keys constraints search-pathWhen I use the maven-hibernate3-plugin (aka hbm2ddl) to generate my database schema, it creates many database constraints with …
database hibernate orm jpa constraintsI want to add a default constraint using ALTER TABLE in SQL Server, but I received the below error message …
sql sql-server constraints alter-tableI don't know why the safe area covered my view on the iPhone X, simulator, but in xCode's view debug …
ios swift constraints iphone-x safearealayoutguideWhat are good ways to add a constraint to PostgreSQL to check that exactly one column (from a set of …
postgresql constraintsit seems I have created a simple Image view with the following constraints: Align Center X to: Superview Align Center …
xcode swift constraints ambiguousI have a child table. and foreign key there with ON DELETE CASCADE while creating the table. There are no …
sql constraints cascade alterWhat is happening now with constraints in SwiftUI? Do View types adapt automatically for bigger devices etc. or what should …
ios swift constraints nslayoutconstraint swiftuiHere's the scenario: I've written some code with a type signature and GHC complains could not deduce x ~ y for …
haskell constraints ghc