Knowledge base

Dummy Activity

Category: Knowledge base > Dictionary

An activity of zero duration used to show a logical relationship in the arrow
diagramming method. Dummy activities are used when logical relationships cannot
be completely or correctly described with regular activity arrows. Dummies are
shown graphically as a dashed line headed by an arrow.
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Predecessor Activity

Category: Knowledge base > Dictionary

(1) In the arrow diagramming method, the activity which enters a node.
(2) In the precedence diagramming method, the “from” activity.
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Successor Activity

Category: Knowledge base > Dictionary

(1) In the arrow diagramming method, the activity which departs a node.
(2) In the precedence diagramming method, the “to” activity.
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Critical Activity

Category: Knowledge base > Dictionary

Any activity on a critical path. Most commonly determined by using the critical
path method. Although some activities are “critical” in the dictionary sense without
being on the critical path, this meaning is seldom used in the project context.
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Corrective Action

Category: Knowledge base > Dictionary

Changes made to bring expected future performance of the project into
line with the plan.
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Information Distribution

Category: Knowledge base > Dictionary

Making needed information available to project stakeholders in a
timely manner.
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Retainage

Category: Knowledge base > Dictionary

A portion of a contract payment that is held until contract completion in order to
ensure full performance of the contract terms.
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Finish Date

Category: Knowledge base > Dictionary

A point in time associated with an activity’s completion. Usually qualified by one
of the following: actual, planned, estimated, scheduled, early, late, baseline, target
or current.
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Start Date

Category: Knowledge base > Dictionary

A point in time associated with an activity’s start, usually qualified by one of the following:
actual, planned, estimated, scheduled, early, late, target, baseline, or current.
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Data Date

Category: Knowledge base > Dictionary

The point in time that separates actual (historical) data from future (scheduled)
data. Also called as-of date.
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