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

# Workflow DB

> Shared Postgres database used by the workflow human-in-the-loop examples.

```python workflow_db.py theme={null}
from agno.db.postgres import PostgresDb

db_url = "postgresql+psycopg://ai:ai@localhost:5532/ai"
db = PostgresDb(db_url=db_url)
```

## Run the Example

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U agno psycopg-binary sqlalchemy
    ```
  </Step>

  <Snippet file="run-pgvector-step.mdx" />

  <Step title="Run the example">
    Save the code above as `workflow_db.py`, then run:

    ```bash theme={null}
    python workflow_db.py
    ```
  </Step>
</Steps>

Full source: [cookbook/05\_agent\_os/human\_in\_the\_loop/workflow/workflow\_db.py](https://github.com/agno-agi/agno/blob/main/cookbook/05_agent_os/human_in_the_loop/workflow/workflow_db.py)