ITPEC IP April 2025 Question 93
ITPEC IP April 2025 — Question 93 of 100
A DFD represents data flow and its relationship with processing — DFD stands for data flow diagram.
Its main elements show external entities, processes that transform data, data stores, and flows connecting them. The diagram models what data enters, where it moves, how it is transformed, and where it is retained, without specifying program-control sequence.
Answer (d)
Why not others:
- (a) describes a state-transition diagram
- (b) describes an entity-relationship diagram
- (c) describes an object or class-oriented model containing attributes, operations, and relationships
Key rule: Choose a modeling notation by its focus: DFD for data movement, ERD for data structure, state diagrams for behavior over states, and class diagrams for objects.
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