有一題會計問題 - 會計

各位厲害的大大們
小妹現在在美國讀會計
正在學data flow diagram
但是 觀念聽起來簡單
真的要做起題目來 好難啊~
以下有一份問題(是英文的) 想請問有沒有大大是可以解的嗎
我知道感覺要花很多時間解 或是用一些concept來解釋也可以!

The following narrative describes Aegis Company's Billing Procedure:

Each evening the shipping department at Aegis Compnay forwards, to the billing
department, copy #2 of all shipping notices for goods shipped to customers
that day. The next day a billing clerk starts the billing process by obtaining
unit sales prices from a price list book and noting the prices on the shipping
notice. He then types a three part invoices for each shipment, mails the
original (copy 1) to the customer, and files copy 2 by customer name. From
invoice copy 3, the clerk prepares a batch total tape, staples the tape to the
batch of invoices, and sends the batch to the data processing department.

In data processing, a sata control clerk first enters the invoice batch total
in a control log. Then a data entry clerk keys each invoice on a key-to-tape
machine. The magnetic transaction tape that is produced by the keying operation
is sorted in customer account number order using a computer sort utility. At
5:00 PM each evening, the invoice transaction tape is run, together with the
previous day's accounts receivable master file tape, to produce an updated
master file. The update run also generates a daily summary report which is
compared to the batch control log total. If the totals agree (NOTE), the
report is stapled to the batch of invoices; and the package is filed by date.

NOTE: Exception routines are beyond the narrative's scope.

Requirements:

a. Prepare a table of entities and activities
b. Prepare a context diagram
c. Prepare a chronologically sorted table of entities and activities.
Indicate on this table the groupingbubble number and bubble titles - to be
used in preparing a level 0 logical DFD.
d. Prepare a logical data flow diagram (level 0 only)


我已經完成了第一項
但是碰到context diagram的部分就卡住了
卡在找不到main activity跟destination/sources的部分

我知道各位大大都很忙~PTT也不是免費的家教
只希望各位大大有興趣的話可以解看看
然後我再來參考參考! 感謝~

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我也要衝人氣 v(￣﹏￣)o

http://www.wretch.cc/album/ispy

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