DFD
August 26, 2024DFD
August 26, 2024DFD
| Question 8 |
Which of the following statements are TRUE?
I. The context diagram should be identified clearly at all levels of DFDs
II.Control information should not be represented in a DFD
III. Control information should not be represented in a DFD
IV. A data store can be connected either to another datastore or to an external entity.
I. The context diagram should be identified clearly at all levels of DFDs
II.Control information should not be represented in a DFD
III. Control information should not be represented in a DFD
IV. A data store can be connected either to another datastore or to an external entity.
| II and IV | |
| II and III | |
| I and III | |
| I,II and III |
Question 8 Explanation:
● A system context diagram (SCD) in engineering is a diagram that defines the boundary between the system, or part of a system, and its environment, showing the entities that interact with it.This diagram is a high level view of a system. It is similar to a block diagram.
● A data flow diagram (DFD) is a way of representing a flow of a data of a process or a system (usually an information system) The DFD also provides information about the outputs and inputs of each entity and the process itself. A data flow diagram has no control flow, there are no decision rules and no loops. Specific operations based on the data can be represented by a flowchart.
● A data flow diagram (DFD) is a way of representing a flow of a data of a process or a system (usually an information system) The DFD also provides information about the outputs and inputs of each entity and the process itself. A data flow diagram has no control flow, there are no decision rules and no loops. Specific operations based on the data can be represented by a flowchart.
Correct Answer: C
Question 8 Explanation:
● A system context diagram (SCD) in engineering is a diagram that defines the boundary between the system, or part of a system, and its environment, showing the entities that interact with it.This diagram is a high level view of a system. It is similar to a block diagram.
● A data flow diagram (DFD) is a way of representing a flow of a data of a process or a system (usually an information system) The DFD also provides information about the outputs and inputs of each entity and the process itself. A data flow diagram has no control flow, there are no decision rules and no loops. Specific operations based on the data can be represented by a flowchart.
● A data flow diagram (DFD) is a way of representing a flow of a data of a process or a system (usually an information system) The DFD also provides information about the outputs and inputs of each entity and the process itself. A data flow diagram has no control flow, there are no decision rules and no loops. Specific operations based on the data can be represented by a flowchart.
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