Enterprise Data Structures

Introduction

At enterprise scale, modeling isn't just about embed vs reference. It's about multi-tenant isolation, schema versioning, regulatory metadata (GDPR, SOC2), audit logs and time-travel. This lesson covers the structures large teams adopt.

Understanding the topic

• tenantId on every document, indexed.
• schemaVersion field for safe rolling migrations.
• createdBy / updatedBy / deletedAt soft-delete pattern.
• auditLog sibling collection for compliance.
• Sharding key chosen on tenantId for isolation.

Real-world use

Healthcare and fintech Mongo apps almost always carry these fields — without them, GDPR/SOC2 audits become nightmares.

Best practices

• Add audit + tenant fields from day one — retrofit is painful.
• Use schemaVersion to ship breaking changes safely.