GATE 2010
August 26, 2024Database-Management-System
August 26, 2024Database-Management-System
| Question 614 |
Which possibility among the following is invalid in case of a Data Flow Diagram ?
| A process having in-bound data flows more than outbound data flows | |
| A data flow between two processes | |
| A data flow between two data stores | |
| A data store having more than one in-bound data flows |
Question 614 Explanation:
DFD Rules:
1.Each process should have at least one input and an output.
2.Each data store should have at least one data flow in and one data flow out.
3.Data stored in a system must go through a process.
4.All processes in a DFD go to another process or a data store.
1.Each process should have at least one input and an output.
2.Each data store should have at least one data flow in and one data flow out.
3.Data stored in a system must go through a process.
4.All processes in a DFD go to another process or a data store.
Correct Answer: C
Question 614 Explanation:
DFD Rules:
1.Each process should have at least one input and an output.
2.Each data store should have at least one data flow in and one data flow out.
3.Data stored in a system must go through a process.
4.All processes in a DFD go to another process or a data store.
1.Each process should have at least one input and an output.
2.Each data store should have at least one data flow in and one data flow out.
3.Data stored in a system must go through a process.
4.All processes in a DFD go to another process or a data store.
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