# valence-backend-sql
Shared SQL document-storage helpers used by [`valence-backend-sqlite`](../valence-backend-sqlite/)
and [`valence-backend-postgres`](../valence-backend-postgres/).
## Audience
| **Adapter authors** | Reuse JSON-document + edges helpers |
| **App developers** | Prefer facade features `sqlite` / `postgres` — not this crate directly |
This is **not** a user-facing engine. There is no `ENGINE_ID` and no facade feature named `sql`.
See `DatabaseBackend` rustdoc (`cargo doc -p uf-valence-core --open`).