InterviewsVector
AdvancedStaffArchitecture Evolution & Migrations55 minutesPro answer

SDV-058

Split domain ownership without splitting every shared table first

Establish decision rights and write authority through contracts and access controls before a costly physical data decomposition.

Organizational DesignTechnical DebtApi DesignConsistency

Interview prompt

Problem context

Teams argue over a shared customer and account schema. Every roadmap item requires coordination, but the entities legitimately span sales, billing, identity, and support. A database-per-team split would duplicate core facts and create synchronization loops. Redesign ownership.

Skills being evaluated

domain modelingownership designcontract boundariesorganizational alignment

The full reasoning guide is part of Pro

The scenario and evaluation focus above remain public. Pro unlocks the structured answer, trade-off analysis, follow-up probes, common weak answers, rubric, related reasoning, and any architecture diagram.

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What the full guide covers

Clarify the decision
Establish scale assumptions
Functional and non-functional requirements
High-level architecture
Data model and flow
Consistency and transaction boundaries
Failure modes and recovery
Security and privacy
Observability and SLOs
Capacity and cost
Alternatives and trade-offs
Evolution and migration
What Staff and Principal candidates should emphasize

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