数据库中正确的垃圾回收机制是什么？

Question

I store some data in DB for my future usage. After using those data, i would like to remove those data from database. What would be the effective way to do this? I need to select data and clean them in an efficient manner. Im using java as my language and MySql as my storage DB.

Any ideas would be appreciated..

Answer 1

If the data is only going to be used once, then it can be deleted. If all data in the table can be deleted then the most efficient means would be to either drop the table or to truncate it. If neither of these are possible then deletion by PK would be the next best method.