もちろん、Coinbase API からデータを取得し、SQLAlchemy ライブラリを使って SQLite データベースに保存するサンプルコードです：

```python
import requests
import sqlite3
from sqlalchemy import create_engine, Column, Integer, String, Float
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base

# Define the database connection URL
DATABASE_URI = 'sqlite:///coinbase.db'

# Define the SQLAlchemy engine and session
engine = create_engine(DATABASE_URI)
Session = sessionmaker(bind=engine)
session = Session()

# Define the SQLAlchemy Base class
Base = declarative_base()

# Define the schema for the table
class CoinbaseData(Base):
    __tablename__ = 'coinbase_data'
    id = Column(Integer, primary_key=True)
    timestamp = Column(Integer)
    price = Column(Float)

# Define the Coinbase API URL
url = 'https://api.coinbase.com/v2/prices/BTC-USD/spot'

# Retrieve data from the Coinbase API
response = requests.get(url)
data = response.json()

# Create a new object of CoinbaseData class and store data in it
coinbase_data = CoinbaseData(timestamp=data['data']['timestamp'], price=data['data']['amount'])

# Add the object to the session and commit the transaction
session.add(coinbase_data)
session.commit()
```

このコードは、**'coinbase_data'** テーブルの SQLAlchemy スキーマを定義し、Coinbase API からデータを取得し、**'CoinbaseData'** クラスのオブジェクトを作成し、SQLAlchemy セッションに追加します。最後に、トランザクションを SQLite データベースにコミットします。

このコードは、必要なライブラリ(requests, SQLAlchemy)をすでにインストールし、**'coinbase.db'** という名前のデータベースファイルを Python スクリプトと同じディレクトリに作成していることを仮定していることに注意してください。
Sure, here is an example code that retrieves data from Coinbase API and stores it in a SQLite database using SQLAlchemy library:

```python
import requests
import sqlite3
from sqlalchemy import create_engine, Column, Integer, String, Float
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base

# Define the database connection URL
DATABASE_URI = 'sqlite:///coinbase.db'

# Define the SQLAlchemy engine and session
engine = create_engine(DATABASE_URI)
Session = sessionmaker(bind=engine)
session = Session()

# Define the SQLAlchemy Base class
Base = declarative_base()

# Define the schema for the table
class CoinbaseData(Base):
    __tablename__ = 'coinbase_data'
    id = Column(Integer, primary_key=True)
    timestamp = Column(Integer)
    price = Column(Float)

# Define the Coinbase API URL
url = 'https://api.coinbase.com/v2/prices/BTC-USD/spot'

# Retrieve data from the Coinbase API
response = requests.get(url)
data = response.json()

# Create a new object of CoinbaseData class and store data in it
coinbase_data = CoinbaseData(timestamp=data['data']['timestamp'], price=data['data']['amount'])

# Add the object to the session and commit the transaction
session.add(coinbase_data)
session.commit()
```

This code defines a SQLAlchemy schema for a **'coinbase_data'** table, retrieves data from the Coinbase API, creates an object of **'CoinbaseData'** class, and adds it to the SQLAlchemy session. Finally, it commits the transaction to the SQLite database.

Note that this code assumes that you have already installed the required libraries (requests, SQLAlchemy) and created a database file named **'coinbase.db'** in the same directory as your Python script.