Provided by: libur-perl_0.450-1_all 

NAME
UR::DataSource::RDBMS::UniqueConstraintColumn - metadata about a data source's unique constraints
DESCRIPTION
This class represents instances of unique constraints in a data source. They are maintained by 'ur update classes' and stored in the namespace's MetaDB. Multi-column unique constraints are represented by instances having the same table_name and constraint_name, but different column_names.