# Data model and ownership: [domain]

**View:** Current (verified) / Proposed

## Data owner

- Authoritative service / store:
- Consumers and permitted access paths:
- Data sensitivity and retention:

## Conceptual entities

```mermaid
erDiagram
    ACCOUNT ||--o{ SESSION : has
    ACCOUNT {
      string id PK
    }
    SESSION {
      string id PK
      string account_id FK
    }
```

> Illustrative only. Replace with observed schema or a clearly labeled proposal.

## Constraints and invariants

- Keys / uniqueness:
- Referential and consistency rules:
- Tenant isolation enforcement (if applicable):
- Authorization checks:

## Lifecycle

- Create/update/delete behaviors:
- Backups, exports, deletion requests and retention:
- Migrations and backward compatibility:

## Verification

- Canonical schema/migrations paths:
- Unit/integration/negative tenancy tests: