Briefly answer the following questions:
1. What are the roles of the Analysis, Redo and Undo phases in ARIES?
2. Consider the execution shown in Figure 20.6.
(a) What is done during Analysis? (Be precise about the points at which Analysis begins and ends and describe the contents of any tables constructed in this phase.)
(b) What is done during Redo? (Be precise about the points at which Redo begins and ends.)
(c) What is done during Undo? (Be precise about the points at which Undo begins and ends.)
Figure 20.6