1. A method comprising: receiving a row insert for a tuple into a column group store table, the tuple comprising one or more tuplets, each of the tuplets corresponding to a column group in the column group store table; copying at least one of the tuplets into an insert buffer that is specific to one of the column groups in the column group store table; deferring the row insert into the column group store table until an occurrence of one or more triggering events; and in response to the occurrence of the one or more triggering events, flushing the row insert into storage associated with the column group store table.