You need to turn on Tracing for a page that is not performing well. You must store the trace information in a database for reporting and trending.
Which two actions should you perform?（）

You create a large, n-tier Web application that has a custom event tracking system. You need to create a custom event type that enables your event tracking system to record all relevant event details for all types of events. The events must be stored in Microsoft SQL Server.
From which base type should your custom event type inherit? （）