SOFTWARE IN PRACTICE
If you can't describe what you are doing as a process, you don't know what you're doing.
An activity is a major unit of work to be completed in achieving the objectives of a process. An activity has precise starting and ending dates, incorporates a set of tasks to be completed, consumes resources, and results in work products. An activity may have a precedence relationship with other activities. For example, finish-to-start, start-to-start, finish-to-finish (refer precedence diagram).
Processes are Partitioned into Activities and Tasks
Examples of Activities
The major activities in each phase of the Joint Application Design process are:
Defining an Activity
Activities are defined in terms of: