I have been given a project to do, this is the brief.

A sports shop wants to automate its operations using computerised
information system. One of the classes needed for this system is a
sports item class.

Each sport item has a description , a price , quantity in stock,
re-order quantity and a supplier. Supplier details are name, Phone
number and email address.

When a sports item is sold, the quantity in stock should be reduced by
the number of items of that item sold. A sale can be for more than one
item. Items can only be sold if there is sufficent number in stock.

the shop needs to know at any time which items have fallen below their
reorder quantity, so the item can be restocked.  When the item is
restocked, the quantity in stock for that item should be increased by
that amount.

Would really appreciated help with this. Have been told its similiar to
the Tutor Class / Student Class

Cheers