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Understanding isolated PostgreSQL schemas

June 18, 2026 by SimplIO Engineering Team

Why Schema-Per-Merchant?

When dealing with product information management (PIM), store data changes rapidly. By isolating each shop in its own database schema, we avoid indexing collisions, eliminate cross-tenant leakage risks, and make migrations simple.

Direct Database Access

The Next.js backend validates merchant requests and executes SQL through a connection pool. Each transaction selects the shop's database role and schema. A separate provisioning login creates schemas and tables during onboarding.