Practice - Fundamental Rules and Conventions of DFDs
Practice Questions
Test your understanding with targeted questions
What does a 'Black Hole' represent in a DFD?
💡 Hint: Think about what happens to data.
What do we call a process that generates output without input?
💡 Hint: Consider what it means for data generation.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What defines a 'Black Hole' in a DFD?
💡 Hint: Consider what happens to input data in a process.
True or False: In a DFD, data stores can interact directly with external entities.
💡 Hint: Think about the structural flow of data.
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Challenge Problems
Push your limits with advanced challenges
Design a DFD for an online bookstore, clearly showing processes, data stores, and external entities while adhering to the black hole and miracle rules.
💡 Hint: Make sure all processes produce outputs!
Evaluate a provided DFD and identify any rules that are violated regarding data flow, black holes, and miracles.
💡 Hint: Look for any processes that don't clearly show input-output relationships.
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Reference links
Supplementary resources to enhance your learning experience.