Level 0 (context diagram) and a Level 1 data flow diagram (DFD) - Software-Eng

This is a discussion on Level 0 (context diagram) and a Level 1 data flow diagram (DFD) - Software-Eng ; Hi all, I have information on how a company does there business, the compnay is called C**** Capers. I want to produce a Level 0 (context diagram) and a Level 1 data flow diagram (DFD) for the proposed system. I ...

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Level 0 (context diagram) and a Level 1 data flow diagram (DFD)

  1. Default Level 0 (context diagram) and a Level 1 data flow diagram (DFD)

    Hi all,

    I have information on how a company does there business, the compnay
    is called C**** Capers. I want to produce a Level 0 (context diagram)
    and a Level 1 data flow diagram (DFD) for the proposed system. I have
    no idea on how to draw one of these.

    Here is some brief information about the businees:

    C**** Capers is a small business based in the Midlands. The main
    function of the business is to hire
    c**** narrow boats to customers for holidays on the local c****s. The
    business has a range of narrow
    boats sleeping from two to eight people. The head office of C****
    Capers is based in a purpose built
    office complex on the outskirts of Birmingham. The owner of C****
    Capers is based at this office, as
    is the main administration office. The narrow boats are moored in a
    boat yard on The Four Counties
    C**** Ring, which is approximately 12 miles away.

    I have been given the information below on producing the Level 0
    (context diagram) and a Level 1 data flow diagram (DFD).

    When a customer books a narrow boat the following procedures take
    place within C**** Capers:

    the customer advises a member of the administration staff of the
    start date, type of break and
    duration
    a member of the administration staff enters the booking onto the
    booking system
    the cost is worked out and the customer is given a booking reference
    and an invoice
    the customer pays the invoice
    the information about the booking is sent to the boat yard
    a record of the booking is made - this is done by hand
    the customer goes to the boat yard on the first day of the hire
    period to collect the narrow
    boat
    the customer returns the narrow boat
    the cost of any extra cleaning, repairs or breakages is calculated
    the customer pays this cost
    the narrow boat is returned to the fleet.
    There are however problems with this procedure:
    narrow boats being double booked
    narrow boats being out of the water for painting but still being
    booked out to customers
    narrow boats being out of the water for routine maintenance but
    still being booked out to
    customers
    narrow boats being out of the water for servicing but still being
    booked out to customers
    narrow boats being booked out to customers when being prepared for
    safety certificates (SC).

    The following entities could be used when developing the new system

    BOAT (Boat_Name, Boat_Number, berths, weekend_cost, midweek_cost)
    CUSTOMER (Customer_Number, customer_surname, customer_firstname,
    address, contact_number)
    BOOKING (Booking_Number, Boat_Number, Customer_Number, start_date,
    duration)
    BOAT_RECORDS (Boat_Number, Boat_Name, maintenance_date, painted_date,
    last_service_date,
    SC_due_date, available)

    Key
    Primary Keys are in bold
    Foreign Keys are in italics



    Please could anyone help me produce both of these diagrams. Thank you.

    Regards
    Vinny


  2. Default Re: Level 0 (context diagram) and a Level 1 data flow diagram (DFD)

    On 17 May 2007 04:53:55 -0700, Vinny <vineshprajapati{}>
    wrote:

    >Hi all,
    >
    >I have information on how a company does there business, the compnay
    >is called C**** Capers.


    If you google for C**** Capers you will find the whole examination
    paper in the first link.



    --
    Regards, Paul Herber, Sandrila Ltd.
    DFD for Visio http://www.gane-sarson.sandrila.co.uk/

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