Mapping of ERD to DFD

Question

Explain the mapping of ERD to DFD?

Answer 1

The mapping of ERD to DFD is as follows:

I. Entities within ERD must correspond to an existing entity/store within DFD

II. Entity within DFD is transformed to attributes of an entity within ERD

III. Connections within ERD has 1 to 1 correspondence to processes within DFD

IV. A connection within ERD has 1 to 1 correspondence to flows within DFD.

V. Entities within ERD must correspond to an existing entity/store within DFD.