UML Designer User's Guide
By looking at the above description from our users, we might derive the
following individual requirements for the system:
- Keep a catalog of available books
- Index books by title, author, and Dewey number
- Support catalog queries
To add these requirements to the model, follow these steps:
- Select Library Catalog from the list of models in the leftmost
pane of the Relationships Browser. The middle pane shows a list of
possible relationships to model elements the model might contain.
- In the middle pane, select Requirements. The rightmost
pane shows a list of requirements already defined for the model; since we
haven't created any yet, the list is empty.
- Select New from the Relationships menu, or from the
pop-up menu for the selected relationship.
- When prompted for the requirement name, type Keep a catalog of
available books.
- Select OK. The new requirement appears in the
list.
- Repeat the same process to add the other two requirements listed
above.
After you have added all three requirements to the list, you can provide
additional descriptive text for each requirement. To do this, select
the requirement you want to describe, and then use the bottom text pane of the
Relationships Browser to type the requirement text. This text pane can
contain any kind of description you want to capture for the requirement;
it can also contain hypertext links to other model elements. Our
example's requirements are fairly straightforward and probably do not
need much more explanation at this stage. Instead, let's move on
to use cases.
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