This section doesn't apply those ideas, to be equivalent to the counterpart in <a href="https://www.starlette.io/database/" class="external-link" target="_blank">Starlette</a>.

## Import and set up `SQLAlchemy`

* Import `SQLAlchemy`.

In the next chapters, I'll give you more **concrete recipes** to deploy FastAPI applications.

But for now, let's check these important **conceptual ideas**. These concepts also apply to any other type of web API. 💡

## Security - HTTPS

In the [previous chapter about HTTPS](https.md){.internal-link target=_blank} we learned about how HTTPS provides encryption for your API.

* `dependencies`: to include ✨ top-level dependencies ✨ that apply to the whole application. E.g. to add global authentication.
* `callbacks`: OpenAPI callbacks that apply to all the *path operations*.
* `deprecated`: to mark all the *path operations* as deprecated. 🤷
* `include_in_schema`: to allow excluding all the *path operations* from the OpenAPI schema.
* `responses`: OpenAPI responses that apply to all the *path operations*.

For example:

## To `async` or not to `async`

As dependencies will also be called by **FastAPI** (the same as your *path operation functions*), the same rules apply while defining your functions.

You can use `async def` or normal `def`.

                """
            ),
        ] = None,
        callbacks: Annotated[
            Optional[List[BaseRoute]],
            Doc(
                """
                OpenAPI callbacks that should apply to all *path operations*.

                It will be added to the generated OpenAPI (e.g. visible at `/docs`).

                Read more about it in the

    ```

=== "Python 3.8+"

    ```Python hl_lines="35"
    {!> ../../../docs_src/body_updates/tutorial002.py!}
    ```

### Partial updates recap

In summary, to apply partial updates you would:

* (Optionally) use `PATCH` instead of `PUT`.
* Retrieve the stored data.
* Put that data in a Pydantic model.

                """
            ),
        ] = None,
        callbacks: Annotated[
            Optional[List[BaseRoute]],
            Doc(
                """
                OpenAPI callbacks that should apply to all *path operations* in this
                router.

                It will be added to the generated OpenAPI (e.g. visible at `/docs`).

                Read more about it in the