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6 - PROJECT TIME MANAGEMENT

6.2.3.2 Activity Attributes

Activities, distinct from milestones, have durations, during which the work of that activity is performed,
and may have resources and costs associated with that work. Activity attributes extend the description of
the activity by identifying the multiple components associated with each activity. The components for each
activity evolve over time. During the initial stages of the project, they include the activity identifier (ID), WBS ID,
and activity label or name, and when completed, may include activity codes, activity description, predecessor
activities, successor activities, logical relationships, leads and lags (Section 6.3.2.3), resource requirements,
imposed dates, constraints, and assumptions. Activity attributes can be used to identify the person responsible
for executing the work, geographic area, or place where the work has to be performed, the project calendar 6
the activity is assigned to, and activity type such as level of effort (often abbreviated as LOE), discrete effort,
and apportioned effort. Activity attributes are used for schedule development and for selecting, ordering, and
sorting the planned schedule activities in various ways within reports. The number of attributes varies by
application area.

6.2.3.3 Milestone List

A milestone is a significant point or event in a project. A milestone list is a list identifying all project milestones
and indicates whether the milestone is mandatory, such as those required by contract, or optional, such as those
based upon historical information. Milestones are similar to regular schedule activities, with the same structure and
attributes, but they have zero duration because milestones represent a moment in time.

6.3 Sequence Activities

Sequence Activities is the process of identifying and documenting relationships among the project activities. The
key benefit of this process is that it defines the logical sequence of work to obtain the greatest efficiency given all
project constraints. The inputs, tools and techniques, and outputs of this process are depicted in Figure 6-7. Figure
6-8 depicts the data flow diagram of the process.

Inputs Tools & Techniques Outputs
.1 Schedule management .1 Precedence diagramming .1 Project schedule network
plan method (PDM) diagrams
.2 Activity list .2 Dependency .2 Project documents
.3 Activity attributes determination updates
.4 Milestone list .3 Leads and lags
.5 Project scope statement
.6 Enterprise environmental
factors
.7 Organizational process
assets

Figure 6-7. Sequence Activities: Inputs, tools & techniques, and outputs

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