TBUL club is an innovative young firm that sells memberships to

people who have an interest in certain products. Customers need to join the club and pay membership fees

for one year to receive a product by mail each month. When joining the club, the customer needs to

provide information, including their name, mailing address, phone number, email address, credit card

information, start date, and membership type$($s$)($e$.$g$.,$ coffee$).$ The company currently offers five

memberships $($coffee$,$ wine, beer, flowers, and computer games$),$ each with a different cost. The computer

game membership operates a bit differently from the others. In this case, the member must also select the

type of game $($action$,$ arcade, fantasy$/$science$-$fiction, educational, etc.$)$ and age level. The monthly

product$($s$)$ will be processed automatically on the first day of each month. Once processed, the inventory

should be updated, and the invoice should be created and sent to the customer. Additionally, customers

can order extra products in addition to their monthly subscriptions, in which case they will need to pay for

the additional costs. The club offers different levels of discounts to its members. The system calculates

the discounts based on customers$$ membership types when ordering additional products. TBUL club is

also planning to expand its business by adding new types of memberships $($e$.$g$.,$ movies$/$shows$,$ toys,

cheese, fruit, and vegetables$).$ The club manager can add new membership types or make changes to

existing membership types.

Q$1.$ User requirements and use case analysis for the system

$1\mathrm{.}1$ Create the requirement definition statement $($complete the functional requirements$).$

$1\mathrm{.}2$ Create use case descriptions for the following two use cases: UC$-1$ Join the TBUL club and UC$-3$

Make additional purchases

Q$2.$ Create a set of DFDs for the system $($Context diagram, level$-0$ diagram, and level$-1$ diagrams for all functions. if you could break down what would be covered in each context, level $0$ and so on$.$ what would be the entities, data stores and process for each level. if you could draw this out on paper or provide a digital visual. also provide the words that go into connecting the boxes.