---
title: "Guides"
description: "The guides cover entities, database adoption, approvals, CI, membership, sandboxes, jobs, row TTL, schema history, and dropped-table recovery."
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.tryatlantis.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Guides

- [Add a new entity](/guides/add-a-new-entity/). Declare, plan, apply, generate —
  with auto-touch, soft delete, and tenant partitioning.
- [Adopt an existing database](/guides/adopt-an-existing-database/). Generate
  declarations from live tables and baseline without DDL.
- [Approve a schema change](/guides/approve-a-schema-change/). Rehearse, decide,
  override; from exit 2 to applied.
- [Set up CI](/guides/set-up-ci/). Plan on pull requests, apply on merge, no
  repository secrets.
- [Manage members and callers](/guides/manage-members-and-callers/). Roles,
  registration, enrolment, apply policies.
- [Use the sandbox](/guides/use-the-sandbox/). Boot, seed, checkpoint, diff,
  fork — in the console or from an agent.
- [Declare a background job](/guides/declarative-jobs/). Typed jobs with handlers
  in your own service.
- [Operate jobs and workflows](/guides/operate-jobs-and-workflows/). Monitoring,
  the dead-letter queue, workflows, backfills.
- [Write a long-running handler](/guides/long-running-handlers/). Idempotency,
  leases, checkpoints, resume-from-progress.
- [Expire rows automatically](/guides/row-ttl/). Row TTL, and chunk-drop expiry
  on tenant-isolated tables.
- [Inspect schema history](/guides/schema-history/). History, diff, blame,
  owners, rollback.
- [Recover a dropped table](/guides/recover-a-dropped-table/). The 30-day parking
  window and how to use it.

Source: https://docs.tryatlantis.dev/guides/index.mdx