Complete the following: Prepare a table of entities and activities (TEA). Draw a context diagram. Draw a physical data flow diagram (DFD)

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Ch 10 The Order Entry/Sales (OE/S) Process:

Lily Grocers, Inc. (Customer Order and Delivery, OE/S ~ "CO/D")

Here are "Questions 1 & 2" for each case study:

  1. Complete the following:
    1. Prepare a table of entities and activities (TEA).
    2. Draw a context diagram.
    3. Draw a physical data flow diagram (DFD)
    4. Prepare an annotated table of entities and activities (TEA).  Indicate on this table the groupings, bubble numbers, and bubble titles to be used in preparing a level 0 logical DFD.
    5. Draw a level 0 logical DFD.
  2. Complete the following:
    1. Draw a systems flowchart.
    2. Prepare a control matrix, including explanations of how each recommended existing control plan helps to accomplish--or would accomplish in the case of missing plans--each related control goal.  Your choice of recommended control plans could come from Exhibit 10.1, Exhibits 11.1/11.2,  or any other similar source  plus any additional technology-related control plans from Chapters 9 - 13 that are germane to your company's process.  (There may be more specific guidance in each particular chapter).
    3. Annotate the flowchart prepared in part (a) to indicate the points where control plans are being applied (codes P-1, ..., P-n) or the points where they could be applied but are not (codes M-1, ..., M-n).  NOTE:  Students are encouraged to try to suggest at least two "new" control plans, i.e. have at least M-1 and M-2.
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