Question: ANSWER ONLY FOR THE QUESTIONS. PLEASE DO NOT SEND ANSWERS WHICH ARE RELATED TO OTHER EXERCISES. Henry has been hired as a systems analyst to work on an information system project for a library. Currently, books are ordered manually. Three librarians receive a checklist containing details of forth$[1]$coming books and journals every week. Each one places

ANSWER ONLY FOR THE QUESTIONS. PLEASE DO NOT SEND ANSWERS WHICH ARE RELATED TO OTHER EXERCISES.

Henry has been hired as a systems analyst to work on an information system project for a library.

Currently, books are ordered manually. Three librarians receive a checklist containing details of forth$[1]$coming books and journals every week. Each one places checkmarks against the books they think

should be ordered. The three marked lists are then reviewed by a head librarian, who finalizes the list

of books and the quantity to be ordered. The final list is sent to a clerk, who mails it to the appropri$[1]$ate publishers for orders.

a$.$ Draw a context diagram for this situation.

b$.$ Draw a level $0$ data flow diagram for this situation