Most of the code is actually the same.

So, we are going to focus only on the differences.

## File structure

Let's say you have a directory named `my_super_project` that contains a sub-directory called `sql_app` with a structure like this:

```
.
└── sql_app
    ├── __init__.py
    ├── crud.py
    ├── database.py
    ├── main.py
    └── schemas.py
```

## 🎏 📱

👥 🔜 ✍ 🎏 🈸 🇸🇲 🔰 ([🗄 (🔗) 💽](../tutorial/sql-databases.md){.internal-link target=_blank}).

🌅 📟 🤙 🎏.

, 👥 🔜 🎯 🕴 🔛 🔺.

## 📁 📊

➡️ 💬 👆 ✔️ 📁 📛 `my_super_project` 👈 🔌 🎧-📁 🤙 `sql_app` ⏮️ 📊 💖 👉:

```
.
└── sql_app
    ├── __init__.py
    ├── crud.py
    ├── database.py
    ├── main.py
    └── schemas.py
```

👉 🌖 🎏 📊 👥 ✔️ 🇸🇲 🔰.

在这里，我们将看到如何使用**SQLAlchemy ORM**。

以类似的方式，您也可以使用任何其他 ORM。

!!! tip
    在文档中也有一篇使用 Peewee 的等效的文章。

## 文件结构

对于这些示例，假设您有一个名为的目录`my_super_project`，其中包含一个名为的子目录`sql_app`，其结构如下：

```
.
└── sql_app
    ├── __init__.py
    ├── crud.py
    ├── database.py
    ├── main.py
    ├── models.py
    └── schemas.py
```

        json_schema_extra: Union[Dict[str, Any], None] = None,
        **extra: Any,
    ):
        assert default is ..., "Path parameters cannot have a default value"
        self.in_ = self.in_
        super().__init__(
            default=default,
            default_factory=default_factory,
            annotation=annotation,
            alias=alias,
            alias_priority=alias_priority,

In a similar way you could use any other ORM.

!!! tip
    There's an equivalent article using Peewee here in the docs.

## File structure

For these examples, let's say you have a directory named `my_super_project` that contains a sub-directory called `sql_app` with a structure like this:

```
.
└── sql_app
    ├── __init__.py
    ├── crud.py
    ├── database.py
    ├── main.py
    ├── models.py

📥 👥 🔜 👀 ❔ 👷 ⏮️ **🇸🇲 🐜**.

🎏 🌌 👆 💪 ⚙️ 🙆 🎏 🐜.

!!! tip
    📤 🌓 📄 ⚙️ 🏒 📥 🩺.

## 📁 📊

👫 🖼, ➡️ 💬 👆 ✔️ 📁 📛 `my_super_project` 👈 🔌 🎧-📁 🤙 `sql_app` ⏮️ 📊 💖 👉:

```
.
└── sql_app
    ├── __init__.py
    ├── crud.py
    ├── database.py
    ├── main.py
    ├── models.py
    └── schemas.py
```

import org.codelibs.fess.es.user.allcommon.EsAbstractEntity;
import org.codelibs.fess.es.user.bsentity.dbmeta.UserDbm;

/**
 * ${table.comment}
 * @author ESFlute (using FreeGen)
 */
public class BsUser extends EsAbstractEntity {

    // ===================================================================================
    //                                                                          Definition

    abstract void forEachRemaining(Consumer<? super E> action);

    abstract boolean tryAdvance(Consumer<? super E> action);

    abstract @Nullable GeneralSpliterator<E> trySplit();

    final int characteristics() {
      return spliterator.characteristics();
    }

    final long estimateSize() {
      return spliterator.estimateSize();
    }

    final Comparator<? super E> getComparator() {

  static <E extends Comparable<? super E>>
      Collector<Range<E>, ?, ImmutableRangeSet<E>> toImmutableRangeSet() {
    return (Collector) TO_IMMUTABLE_RANGE_SET;
  }

  // Multisets

  static <T extends @Nullable Object, E> Collector<T, ?, ImmutableMultiset<E>> toImmutableMultiset(
      Function<? super T, ? extends E> elementFunction, ToIntFunction<? super T> countFunction) {
    checkNotNull(elementFunction);

example: * <pre>assertThat("myValue", allOf(startsWith("my"), containsString("Val")))</pre> */ @Factory public static <T> Matcher<T> allOf(Matcher<? super T> first, Matcher<? super T> second, Matcher<? super T> third, Matcher<? super T> fourth, Matcher<? super T> fifth, Matcher<? super T> sixth) { List<Matcher<? super T>> matchers = new ArrayList<Matcher<? super T>>(6); matchers.add(first); matchers.add(second); matchers.add(third); matchers.add(fourth); matchers.add(fifth); matchers.add(sixth); return...