In SQL Server that's defined at table creation time. In Oracle it's the same: defined at creation time, but you call it an Indexed Ordered Table (IOT). In MyS

In SQL Server that's defined at table creation time. In Oracle it's the same: defined at creation time, but you call it an Indexed Ordered Table (IOT). In MySQL all InnoDB tables are clustered (in that sense) because that's the only storage strategy of InnoDB.