Do not document any information about the individual

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do not document any information about the individual use cases such as the systematic interaction between a use case and an actor. This informa- tion is documented textually by means of adequate templates in conjunc- tion with use case diagrams. Reference templates for the documentation of use cases Pertinent literature proposes different templates for textual specifica- tion of use cases (e.g., [Cockburn 2001] ). These templates define types of information that should be documented for a use case and suggest an appropriate structure for the information. The template references there- fore document experience-based knowledge regarding structured textual documentation of use cases. In order to textually specify use cases, the template in table 6-1 is suitable.
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68 6 Model-Based Requirements Documentation Table 6-1 Template for textual use case documentation Rows of a use case template The template for the specification of use cases contains the following attributes: Attributes for unique identification of use cases (rows 1 and 2) Management attributes (rows 3 through 7) Attribute for the description of the use case (row 8) Specific use case attributes, e.g., the trigger event (row 9), actors (row 10), pre- and post-conditions (rows 11 and 12), the result of the use Template for Textual Use Case Documentation Nr. Section Content / Explanation 1 Designation Unique designation of the use case. 2 Name Unique name of the use case. 3 Authors Names of the authors that were involved in this use case description. 4 Priority Importance of the use case according to the applied prioritization technique. 5 Criticality Criticality of the use case, e.g., with respect to how much damage a failure of the use case may cause. 6 Source Designation of the source from which the use case was elicited ([stakeholder | document | system]). 7 Person responsible The stakeholder who is responsible for this use case. 8 Description Brief description of the use case. 9 Trigger event Name of the event that triggers this use case. 10 Actors List of all actors that are involved in this use case. 11 Pre-conditions List with all necessary constraints that must be met before the use case can begin execution. 12 Post-conditions List of all states the system can be in immediately after the execution of the main scenario. 13 Result Description of the results that are produced during use case execution. 14 Main scenario Description of the main scenario of the use case. 15 Alternative scenarios Description of the alternative scenarios of the use case or list of the trigger events of alternative scenarios. Often, post-conditions different than those described in (12) may hold. 16 Exception scenarios Description of the exception scenarios of the use case or list of the trigger events of exception scenarios. Often, post-conditions different than those described in (12) may hold.
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