The Control Panel window contains _____ that allow you to change the properties of an object.?
?

Which of the following is not represented graphically in activity diagrams for control structures?

a. Transition arrow. b. Attribute. c. Action state. d. Decision symbol.

More complex DBMSs maintain a(n) ______, which is a listing of activities that modify the contents of the database.

Fill in the blank(s) with the appropriate word(s).