Question 16 :
Better security occurs if Windows-only authentication is selected.
Question 17 :
SQL Server AFTER Triggers may be assigned views.
Question 18 :
'dbo' stands for database object.
Question 19 :
With SQL Server optimistic locking, an update lock is placed on the row when the row is read.
Question 20 :
By default, SQL Server will create one data file and one log file for each newly created database.