Read the following scenario and answer the questions that follow. Mufindi Racquet is a tennis club in Tanzania. The club has a number of playing courts. Most of the members of the club are local people. The club is opened daily from $10\mathrm{.}00$am to$.8\mathrm{.}00$pm$.$ New members are approved and registered by the club manager. When registered, new members provide their name, address, telephone number, etc. and after the registration they are given a unique member number.

The club encourages its members to join teams, although each member can only belong to one team. When a member decides to join a team he$/$she should contact a receptionist either by phone or at the club, and he$/$she will carry out the appropriate procedure. Playing sessions $($one hour long$)$ can be booked by either a team leader or by an individual member. Each session belongs to a specific price and according to its time, day of the week, etc. The session booking may subsequently be cancelled by the person who booked it$.$ In such a case the session will become available for rebooking. Session records are created by the manager a few weeks in advance i$.$e$.$ members have a couple of weeks to book sessions. Each session is identified by its date, time and court number. Session records are deleted $6$ months after their dates.

i$.$ Write all functional and three assumptions of non$-$functional requirements of the above proposed system

ii$.$Produce $$a $$context $$and $$A $$level $$

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$$DFD $$diagram $$of $$the $$above $$proposed $$system

iii.Draw $$a $$level $$

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$$DFD $$diagram $$of $$the $$above $$proposed $$system

iv$.$Produce $$a $$use $$case $$diagram $$of $$the $$proposed $$system

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a context and A level $0$ DFD diagram of the above proposed system

level $0$ DFD diagram of the above proposed system

a use case diagram of the proposed system

v$.$Produce a Sequence diagram for the use case 'Book session' in the Mufindi Racquet system described above. A brief description of this use case is given below. "A member enters his$/$her number and the system displays the member's details. Next the system displays a list of all available sessions. The member selects one of the sessions and the system books this session for the member and displays the booking confirmation."

vi$.$Produce a state machine$/$chart for the class Session in the Mufindi Racquet system described above.

vii.Consider the following extra information about the Mufindi Racquet system described abov$$: "There are two types of members: permanent members and visiting members. The following data should be stored about each permanent member: Member no$.,$ Member name, Member tel. no$.,$ Date of registration, Date of birth. The attributes of each visiting member are: Member no$,$ Member name, Member tel. no$.,$ Date of registration, Expiry date, 'One off payment. Permanent members are required to submit their CVs$.$ A CV consists of a header, a number of CV lines, a member's signature." Draw a class diagram