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Shopping Application: Classes and DB Schema

HardSystem Design00:00
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Your question is Shopping Application: Classes and DB Schema. Take a moment with it on the right.

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Problem

Design a Shopping application. Explain the classes and how they interact with each other, and the database schema design.

Asked in the Technical Round 2 stage. Focus on a practical object-oriented design and explain the main entities, service boundaries, relationships, persistence choices, and important workflows. Clarify assumptions before presenting the design.