tType )
        {
            [Rivet.ConstraintType]::Default
            {
                $Operation.Name = 'DF_{0}_{1}_{2}' -f $Operation.SchemaName,$Operation.TableName,$Operation.ColumnName
            }

            [Rivet.ConstraintType]::PrimaryKey
            {
                $Operation.Name = 'PK_{0}_{1}' -f $Operation.SchemaName,$Operation.TableName
            }

            [Rivet.ConstraintType]::ForeignKey
            {
                $Operation.Name = 'FK_{0}_{1}_{2}_{3}' -f $Operation.Sch