Complete the worksheets given in class/attached below:

The word ‘cryptography’ comes from crypto meaning “secret” and graphy meaning “writing”. So, the idea of cryptography is that we want to send messages that can be understood only by its intended recipient.

Think about the traditional roles of humans versus those of machines. Machines do the heavy-lifting and manual labor more quickly and accurately. Humans, on the other hand, control tasks, plan calculations, interpret results, and communicate in a human-understandable way. Now, the roles of machine versus human are blurred. You have self-driving cars, programs that beat world chess champions, and software that replace diagnosticians and other doctors. From spam filters to self-driving cars, there has been an increasing need for our machines to learn from data and use that knowledge to make predictions and decisions. This is the heart of artificial intelligence (AI).

A database supports the storage and retrieval of structured data. At its most basic, a database is just a way of storing and organizing information in such a way that it can be easily accessed and managed.