# 2026-05-17-database-models (index)
dir: 2026-05-17-database-models

## role
Database persistence layer providing SQLAlchemy 2.0 async ORM models and Alembic migration infrastructure for PostgreSQL data management in the Headquarter platform API.
## parent
index: ./.pi-map.index.md
map: ./.pi-map.md
## children
-
## files
- .openspec.yaml
- README.md
- design.md
- proposal.md
- tasks.md
## links
index: 2026-05-17-database-models/.pi-map.index.md
map: 2026-05-17-database-models/.pi-map.md
## workflows
-
## dirty
-