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Advanced Queuing - Oracle

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Use Case Diagrams<br />

As shown in Figure E–3, a secondary use case with a drop shadow expands into its<br />

own use case diagram, thus making it easier to:<br />

Understand the logic of the operation<br />

Continue a complex operation across multiple pages<br />

<br />

In this example<br />

specify message properties<br />

<br />

specify options<br />

add payload<br />

are all expanded in separate use case diagrams.<br />

Figure E–3 A Use Case Diagram with Drop Shadows Representing Secondary Use<br />

Cases<br />

User/<br />

Program<br />

AQ Operational Interface<br />

ENQUEUE<br />

a message<br />

specify<br />

queue name<br />

specify<br />

message<br />

properties<br />

specify<br />

options<br />

add<br />

payload<br />

Unified Modeling Language Diagrams E-3

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