Можно ли считать использование ORM в качестве промежуточного слоя между приложением и базой данных реализацией принципа инверсии зависимостей?

Using ORM (Object-Relational Mapping) as an intermediate layer between the application and the database partially corresponds to the Dependency Inversion Principle, but not entirely.

The Dependency Inversion Principle states that high-level modules should not depend on low-level modules, but both should depend on abstractions. ORM acts as an abstraction over the database, allowing the application to work with objects rather than directly with SQL queries.

However, if the application depends directly on a specific ORM implementation (e.g., SQLAlchemy, Django ORM), then the principle is violated because the dependency is on a specific framework, not on an abstraction.

To fully comply with the Dependency Inversion Principle, it is advisable to define an interface (abstraction) for data operations and inject a specific ORM implementation through this interface. This way, the application depends on abstractions rather than concrete implementations.

Example:

from abc import ABC, abstractmethod

class UserRepository(ABC):
    @abstractmethod
    def get_user(self, user_id):
        pass

class SqlAlchemyUserRepository(UserRepository):
    def get_user(self, user_id):
        # ORM implementation
        pass

# In the application, use UserRepository, not a specific ORM