Oracle
1Z0-807 · Question #18
1Z0-807 Question #18: Real Exam Question with Answer & Explanation
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Question
An online library wants to introduce a feature where an email notification is generated whenever a book becomes available for circulation. This notification must be sent to only those members who have expressed interest in that book. Which design pattern would you use to implement this requirement?
Options
- AObserver
- BPayload Extractor
- CAsynchronous Resource Integrator
- DWeb Service Broker
- EService Starter
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