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Symbols of a data flow diagram
1. Data Flow
Signifies the connectivity between various processes
2. Process
Performs some processing of input data
3. External Entity
Defines destination or source of system data. The entity that supplies or receives information.
4. Data Store
Repository of data
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EXPLAIN THE WORKING OF CRT?
Testing a new or an changed data processing system with the similar source data that is used in another system. The other system is taken as the standard of comparison.
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Define Verification ?
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