Books for you

Second, you can use them to describe
holistic behavior, which has to be explicitly considered in the system design and
implementation.
System process information is implicitly included in the model. For each use
case we can formulate a postcondition that, in turn, could be a precondition of
another use case. This means that there is a domain-logical sequence between use
cases. A system process represents this dependency explicitly.
Table 2.11 Summary: Describing system processes.
Reference card: Describe system processes.
Incoming and outgoing data
Use cases:
Services provided by the system.
System processes:
Holistic fl ows, consisting of use cases, in a
domain-logical sequence.
Motivation/description
Why? Complex fl ow sequences between use cases have to be dealt with and
modeled explicitly.
What? Describe the fl ow dependencies between use cases and group-related fl ows
into system processes.
How? Study the fl ow dependencies of domain-related use cases based on your pre-
and postconditions and describe them in an activity.


Pages:
173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197