什么是SQL Server Profiler中的“审核注销”？

I'm running a data import (using C#/Linq), and naturally I'm trying to optimize my queries as much as possible. To this end I'm running a trace on the DB using SQL Server Profiler, with my trace filtered by my SQL login name (it's a name that can uniquely be attributed to my data import process).I'm running a data import (using C#/Linq), and