QUESTION $1$

$[25$ Marks$]$

A library has books, journals, and periodicals that it loans to its users. All library material has an accession number which is a unique identifier and a price. In addition, a book has a title, publisher, year of publication, edition, and authors. A journal has journal name, volume number, issue number, and year of publication. Each article in a journal has a title and authors. A periodical has a name and date of publication. The library keeps one or more copies of each library item $($book$,$ journal, periodical$).$ Copies of all library material can be loaned to users. Reference$-$only material is loaned for $2hrs$ and can't be removed from the library. Other material can be loaned for $2$ weeks. For every loan, the library records the user, the loan date and time, and the return date and time. For users, the library keeps their names, address, and cell phone number. If a user loses a loaned item they are made to purchase it$,$ however, if the user delays with the loaned item they are finned according to the number of days after the return date. At the moment the fine is R$10$ per day.

$1\mathrm{.}1$ Draw class diagrams for the library system described above. In your diagram indicate attributes, multiplicities, generalisations, aggregations, and compositions, where appropriate

$[25]$

QUESTION $2$

$[25$ Marks$]$

a$.$ Compare and contrast the software development methodologies listed in Table $1$ by providing information on the software methodology's characteristics, advantages and disadvantages in the provided spaces.

$[20]$

Table $11111$: Systems development methodologies

$\backslash$table$[[\backslash$table$[[$Software development$],[$methodology$]],$Characteristics,Advantages,Disadvantages$],[$i$.$ Waterfall,,,$],[$ii$.$ RAD,,,$],[$iii$.$ Extreme,,,$],[$programming $($XP$),,,],[$iv$.$ SSADM,,,$]]$

b$.$ Demonstrate the importance of interface evaluation in the design of system interfaces.

$[5]$