Question: The data flow symbols shown in Figure 5-1 were designed by Ed Yourdon, a well-known IT author, lecturer, and consultant. Many IT professionals consider him

The data flow symbols shown in Figure 5-1 were designed by Ed Yourdon, a well-known IT author, lecturer, and consultant. Many IT professionals consider him to be among the most influential men and women in the software field. Learn more about Mr. Yourdon by visiting his Web site at www.yourdon.com, and write a brief review of his work.

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