Question $3($Marks: $40)$

Answer all questions below.

Q$\mathrm{.}3\mathrm{.}1$ Interpret the state machine diagram below and make reference to states and

transitions.

$(10)$

Q$\mathrm{.}3\mathrm{.}2$ List, with brief descriptions, the three types of events. $(6)$

Q$\mathrm{.}3\mathrm{.}3$ Consider the scenario below and answer the question that follows:

The receptionist keeps track of patient information. He$/$ she will enter

information about the patients. He$/$ she will also keep track of office visits

by the patients. Patient information is also entered and maintained by the

business manager. In addition, the business manager maintains the

information about the dentists. The business manager also prints the

invoices. He$/$ she also enters the payment information when it is received.

Each dentist is responsible for entering information about the dental

procedures that he$/$ she performs. The business manager also prints an

overdue invoice report showing patients that are behind on their

payments.

$(15)$

$17,18,192019$

$$ The Independent Institute of Education $($Pty$)$ Ltd $2019$

Page $6$ of $7$

Sometimes dentists like to see a list of the procedures they performed

during a week or month, and they can request that report form business

manager.

Develop a use case diagram based on the scenario above.

Q$\mathrm{.}3\mathrm{.}4$ Create a brief use case description for one event identified in Q$\mathrm{.}3\mathrm{.}3\mathrm{.}1$ above. $(3)$

Q$\mathrm{.}3\mathrm{.}5$ Describe any three activities that fall under Systems Design. $(6)$