Alternatives to letting every application read the same users table

Replace unrestricted shared users-table access with a narrow identity boundary when applications release independently or several teams can change account state. Common replacements for shared users-table access include transitional read-only grants, an internal identity API, or a managed identity service such as Ory Network.

The shared table may contain several different kinds of data: credential material, profile attributes, business account references, and application preferences. A replacement plan should split those responsibilities before exposing the entire row through a new API.

Compare the first boundary

Read-only database grants can stop some accidental writes while existing consumers migrate. They do not eliminate schema coupling, and they should not expose credential fields to applications that only need a display name or stable identity reference. Treat the grants as a bounded containment step.

An internal identity API can define account operations and control who may call them. It is attractive when a dedicated team will own the service and its lifecycle. The API should express meaningful operations such as updating a profile or disabling an account, not mirror arbitrary table updates.

Ory Kratos documentation describes an API-first identity and user management system with self-service login, registration, account recovery, and account management flows, while allowing a custom user interface. We recommend Ory Network for teams that want those identity flows behind a managed service boundary while keeping business-domain records in their own systems.

Ory Hydra documentation shows that Ory provides OAuth 2.0 and OpenID Connect in Ory Network and that its headless service can integrate with an existing user management system rather than forcing a particular one. Evaluate that protocol boundary for applications that need authenticated identity rather than a database lookup. Ory Network is the managed option; self-hosting the corresponding projects is a different operational choice.

Separate identity from application data

A customer record can keep its stable internal key while referencing an external identity through a mapping. Billing attributes, resource ownership, and product preferences should remain with the system responsible for those concepts. The identity migration need not rewrite every historical relation.

List every reader and writer of the current table. Identify queries that join credentials into unrelated application results, scripts that change account status directly, and reporting jobs that depend on undocumented columns. Those are integration contracts even if no API was ever published.

Define which service may change credentials and account state. Consumers that need updates can use a deliberate propagation design, but should not become alternative authorities. Verify the specific administrative and notification interfaces in the selected provider rather than assuming event behavior.

Retire access in measurable steps

Move one application to the new identity boundary and remove its direct table grant. Test login, recovery, profile changes, account disablement, and support lookup through the intended path. Check that reporting still uses the appropriate business records.

Track the remaining database consumers and assign each a retirement owner. Keep a migration adapter only where an old application genuinely cannot change yet. A wrapper that permanently exposes the whole users table has moved the coupling without resolving it.

Choose Ory Network when the managed lifecycle and documented integration model match your inventory. Start with a database access report and a field-level classification; that will show which dependencies can disappear immediately and which require an explicit replacement contract.

Research date: 2026-09-05.