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Product decomposition, demand analysis, value analysis, value engineering

Transform high-level product statements into tangible deliverables

Break down the scope of work into smaller tasks

The work package is the lowest level of work in the WBS, and its cost and duration can be estimated and managed.

The degree of decomposition depends on the degree of control required

By summarizing all the work at the bottom of the WBS layer by layer, we ensure that there is no omission or redundant work. This is called the 100% rule.

An iterative planning technique that combines detailed planning of near-term work with rough planning of future work at a higher level

In the early strategic planning stages, the information is not clear enough and the work packages can only be broken down to a known level of detail; later, as more information is learned, the work packages to be implemented in the near future can be broken down into specific activities.

Thin near and thick at far, more near and less far

mandatory dependencies

selective dependency

internal dependencies

external dependencies

The activity name is on the arrow line, and the nodes are just code names.

virtual activity

It is a tool for creating a progress model. It uses nodes to represent activities and uses one or more logical relationships to connect activities to show the implementation sequence of activities.

PDM includes four dependencies or logical relationships

There may be two logical relationships between two activities at the same time