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Figure is a level 1 data flow diagram of data movement in a Niagara Falls tour agency called Marilyns Tours. Read it over, checking for

Figure is a level 1 data flow diagram of data movement in a Niagara Falls tour agency called Marilyn€™s Tours. Read it over, checking for any inaccuracies.
a. List and number the errors that you have found in the diagram.
b. Redraw and label the data flow diagram of Marilyn€™s so that it is correct. Be sure that your new diagram employs symbols properly so as to cut down on repetitions and duplications where possible.

Figure is a level 1 data flow diagram of data

D1 COST OF TOURS PRIVATE TRAVEL AGENT 2 Check credit Determine toun desired AIRLINE TRAVEL TOURIST WITH CHARGE CARD TOURIST PAYING TOURIST 3 D2 TRAVEL BROCHURES Make reservations D3 TRAVEL ITINERARY DY CREDIT HISTORY

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