No more having to buy expensive textbooks which you will only use for a year or two and then sell or _______ away. 

You have a server that has very limited memory but has a very large table. You will use mysqldump to back up this table.
Which option will ensure mysqldump will process a row at a time instead of buffering a set of rows?（）

Consider the events_% tables in performance Schema.
Which two methods will clear or reset the collected events in the tables?（）