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What is the difference between ADM and PDM? - Project Management Questions
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What is the difference between ADM and PDM?

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Please explain the difference(s) between ADM (Arrow Diagramming Method) and PDM (Predecessor Diagramming Method). For me they seem to be the same.
asked 6 years ago by anonymous

1 Answer

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ADM (Arrow Diagramming Method)  is the same as AOA (Activity On Arrow)
PDM (Predecessor Diagramming Method) is the same as AON (Activity On Node)

- ADM requires the use of a dummy activity to reflect relationships between events. In PDM yo don't have a dummy.
- In ADM, an activity is represented by an arrow, and events are represented by a point. In PDM, an activity is represented by a box, arrows represent dependencies.
answered 6 years ago by FastProjectManager (10,100 points)

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