The union of two tables is basically the total of the two tables, so "or" questions would be my guess.
Answer:
RainbowTables
Explanation:
RainbowTables is the best option when the cracker has limited time.
Answer:
top down approach
Explanation:
Top down approach is process of breaking down system into sub-system which helps in formulating the overall system. At the end every sub system can be refined with more details.
While bottom up approach is process of gathering systems to design large complex system.
Top down is better as basic information is present and resources can be utilized effectively without impacting maintennance and operations.
