{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[25:30]  hl[25:27,30] *}

### Créer les tables de base au démarrage { #create-database-tables-on-startup }

Nous allons créer les tables de base de données au démarrage de l'application.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[32:37] hl[35:37] *}

```

o

```
http://127.0.0.1:8000/items/foo?short=True
```

o

```
http://127.0.0.1:8000/items/foo?short=true
```

o

```
http://127.0.0.1:8000/items/foo?short=on
```

o

```
http://127.0.0.1:8000/items/foo?short=yes
```

```

ou

```
http://127.0.0.1:8000/items/foo?short=True
```

ou

```
http://127.0.0.1:8000/items/foo?short=true
```

ou

```
http://127.0.0.1:8000/items/foo?short=on
```

ou

```
http://127.0.0.1:8000/items/foo?short=yes
```

///

### Pydantic v1 et v2 dans la même application { #pydantic-v1-and-v2-on-the-same-app }

Pydantic ne prend pas en charge le fait d'avoir un modèle Pydantic v2 contenant des champs eux-mêmes définis comme des modèles Pydantic v1, et inversement.

```mermaid
graph TB
    subgraph "❌ Not Supported"

///

### Pydantic v1 und v2 in derselben App { #pydantic-v1-and-v2-on-the-same-app }

Es wird von Pydantic **nicht unterstützt**, dass ein Pydantic‑v2‑Modell Felder hat, die als Pydantic‑v1‑Modelle definiert sind, und umgekehrt.

```mermaid
graph TB
    subgraph "❌ Nicht unterstützt"

             <b>[</b><font color="#4E9A06">&apos;/home/user/code/awesomeapp&apos;</font><b>]</b>
     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Uvicorn running on <font color="#729FCF"><u style="text-decoration-style:solid">http://127.0.0.1:8000</u></font> <b>(</b>Press CTRL+C to
             quit<b>)</b>

             <b>[</b><font color="#4E9A06">&apos;/home/user/code/awesomeapp&apos;</font><b>]</b>
     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Uvicorn running on <font color="#729FCF"><u style="text-decoration-style:solid">http://127.0.0.1:8000</u></font> <b>(</b>Press CTRL+C to
             quit<b>)</b>

```

또는

```
http://127.0.0.1:8000/items/foo?short=True
```

또는

```
http://127.0.0.1:8000/items/foo?short=true
```

또는

```
http://127.0.0.1:8000/items/foo?short=on
```

또는

```
http://127.0.0.1:8000/items/foo?short=yes
```

또는 다른 어떤 변형(대문자, 첫글자만 대문자 등)이더라도 함수는 `bool` 값이 `True`인 매개변수 `short`를 보게 됩니다. 그렇지 않은 경우 `False`입니다.

             <b>[</b><font color="#4E9A06">&apos;/home/user/code/awesomeapp&apos;</font><b>]</b>
     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Uvicorn running on <font color="#729FCF"><u style="text-decoration-style:solid">http://127.0.0.1:8000</u></font> <b>(</b>Press CTRL+C to
             quit<b>)</b>

<img class="shadow" src="/img/deployment/concepts/image01.png">

---

Теперь, когда мы понимаем разницу между **процессом** и **программой**, продолжим разговор о развёртываниях.

## Запуск при старте { #running-on-startup }