Relational Schema Design (PostgreSQL)
Design a PostgreSQL schema in 9 steps (ERD, normalization, indexes, constraints, migration plan) with runnable DDL.
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Model: claude-opus-4-8
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Knowledge: 2026-Q2
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New product DB design, legacy schema redesign, pre-go-live DB review.
#PostgreSQL#قواعد البيانات#تصميم#فهارس
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