# Generation Hook: 005-postgres-database-replacement

> For the complete documentation index, see [llms.txt](https://traderx.finos.org/llms.txt).

[Learning Guide — PostgreSQL Database Replacement](https://traderx.finos.org/docs/learning/state-005-postgres-database-replacement.md): purpose, walkthrough, and related learning states.

# Generation Hook: 005-postgres-database-replacement

*   Hook script: `pipeline/generate-state-005-postgres-database-replacement.sh`
*   Feature pack: `specs/005-postgres-database-replacement`

Patch-set model:

*   Parent state: `004-containerized-compose-runtime`
*   Patch path: `specs/005-postgres-database-replacement/generation/patches/0001-state-overlay.patch`
*   Patch target root: `generated/code/target-generated`

Hook flow:

1.  Generate parent state `004`.
2.  Apply state patch set (PostgreSQL runtime + service DB config deltas).
3.  Regenerate architecture docs.

Patch refresh command:

```bash
bash pipeline/create-state-patchset.sh 005-postgres-database-replacement 004-containerized-compose-runtime
```