Question
1. Why is it an error if two entities communicate directly without using a process on a Data-Flow diagram? If you see this error on
1. Why is it an error if two entities communicate directly without using a process on a Data-Flow diagram? If you see this error on a Data-Flow diagram, how can you solve it?
2. Describe the difference between logical and physical Data-Flow Diagrams AND explain why a system analyst would use each to communicate with others in the process.
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Database Directions From Relational To Distributed Multimedia And Object Oriented Database Systems
Authors: James Larson
1st Edition
0132908670, 978-0132908672
