Tools and Techniques for Requirements Engineering and Management - Requirements Engineering and Management for Software Development Projects - page 187

Fig. 13.11 Use case diagram example

1. Use case name and optionally use case Id

2. Primary actor

3. Other actors

4. Objective of the use case

5. Precondition

6. Trigger—the event that triggers this use case

7. Exit condition (the definition of completion or success of the use case)

8. Use case description

9. Workflow

10. Alternate workflows

An example description of the use case depicted in Fig. 13.11 is given in
Table 13.2 .
In this manner, we describe each of the use cases in the use case diagram. Now,
as you can perhaps see, some vital information is missing from the above
description. The data description is more or less absent. For each of the data items,
the details of data type (numeric, character, date, currency etc.), the field width,
their constraints etc. are not mentioned. In some cases, these are described in the use
case description or a separate entry is used to describe this information. In some