Unique-constraint is an index that sets one or multiple fields to be unique in a data entity
I have these entities class Foo{ Set<Bar> bars; } class Bar{ Foo parent; String localIdentifier; } With this mapping (…
hibernate unique-constraintContext I have the models AppVersion, App & DeployApp. In the AppVersion model users can upload APK files to the …
python django unique-constraintBelow is the use case: I have a unique index defined on 3 columns say A,B,C. Assume the values …
java hibernate unique-constraint unique-indexI have this table: XPTO_TABLE (id, obj_x, date_x, type_x, status_x) I wanna create a unique …
sql oracle conditional unique unique-constraintConsider the following entity class, used with, for example, EclipseLink 2.0.2 - where the link attribute is not the primary key, …
java jpa try-catch eclipselink unique-constraintWondering if Entity Framework 5 supports unique constraints on entity properties? If so, how can I specify that a property should …
unique-constraint .net-4.5 entity-framework-5I have a simple MySQL table with one column: name. I would like to define a unique constraint on this …
mysql ruby-on-rails ruby-on-rails-3 unique unique-constraintI have a unique index on multiple fields on my database. So if you try to call save on a …
mysql ruby-on-rails ruby insert unique-constraintI use Entity Framework to access my SQL data. I have some constraints in the database schema and I wonder …
sql sql-server entity-framework constraints unique-constraintI noticed that I can have NULL values in columns that have the UNIQUE constraint: UNIQUE(col) Would that generate …
sql sqlite null unique unique-constraint