1.sp_rename can modify the name of the view and the trigger.
2. @@ is a global variable, @ is a local variable.
3. The system stored procedure is placed in the table in SP_ in the Master in the data library.
4. Withconstraint pk is added later, it is the primary key for this field.
5. The code for the stored procedure is placed in SystemComment, query the tree in the sysprocedure table.
6.systemObject Stores stored procedures and triggers.
7. The log file is in the TEMPDB database.
