Advanced Queuing - Oracle

Use Case Diagrams
Figure E–5 Note Boxes
User/
Program
The diagram fragment in Figure E–4 shows an expanded use case diagram. While
the standard diagram has the actor as the initiator, here the use case itself is the
point of departure for the suboperation. In this example, the expanded view of
add payload
represents a constituent operation of
ENQUEUE a message
Figure E–4 The Expanded Use Case Diagram
ENQUEUE
a message
Figure E–5 shows how note boxes are used:
Note boxes can present an alternative name. In this case, the action SELECT
propagation schedules in the user schema is represented by the view USER_
QUEUE_SCHEDULES.
Note boxes can qualify the use case action. In this case, the list attribute names
action is qualified by the note that you must list at least one attribute if you do
not list all the attributes of the propagation schedule.
SELECT
propag schedules
in user schema
OR
The dotted arrow in the use case diagram indicates dependency. In Figure E–6
free a temporary LOB
AQ Operational Interface
add
payload
User view:
USER_QUEUE_
SCHEDULES
list
all propagation
schedule
attributes
E-4 Oracle9i Application Developer’s Guide - Advanced Queuing
list
attribute
names
List at
least one
attribute