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Software Engineering 3 Data Flow Diagrams by Nachum Danzig

10 Questions

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Software Engineering 3 Data Flow Diagrams by Nachum Danzig

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@AccurateTsilaisite

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Questions and Answers

What do we call a flow between two complex processes?

Complex data flow

How can we detail a flow between two complex processes in DFD-2 and DFD-3?

By using a bi-directional arrow

How do we know the sequence of activities in a DFD?

By the direction of the arrows

What logic symbols are used in DFDs?

<p>AND and OR</p> Signup and view all the answers

When does a process use the AND notation in DFDs?

<p>When it only occurs when two previous processes trigger it</p> Signup and view all the answers

When is the OR notation used in DFDs?

<p>When either one of two previous processes can trigger the process by itself</p> Signup and view all the answers

What is assumed if no sign is written for a process that produces multiple outputs?

<p>AND</p> Signup and view all the answers

What is a basic process not connected with in a DFD?

<p>Bi-directional arrow</p> Signup and view all the answers

What is the exception in determining the sequence of activities in a DFD?

<p>Arrow connectors</p> Signup and view all the answers

What do we call a flow between a complex process and another entity?

<p>Complex data flow</p> Signup and view all the answers

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