We have a table with 30 columns. We get new data for each row every day. As part of the new data only few columns get changed. We were earlier doing an insert for all the columns(irrespective of whether it is changed or not), we are thinking now to only update the required columns. Our understanding is that since Cassandra is a column oriented architecture, updating few columns will create less tombstones compared to if we insert all the columns again. Please let me know if our understanding is correct. We should get a better performance with update.