Clean Architecture

Question 1

What is the core goal of Clean Architecture?

Answer 1

To separate business logic from UI and data for maintainability and prevent Technical Debt

Question 2

What is the Dependency Rule?

Answer 2

Inner layers never depend on outer layers; dependencies point inwards.

Question 3

What lives in the Domain Layer?

Answer 3

Pure business logic, entities, and abstract repository interfaces.

Question 4

What lives in the Data Layer?

Answer 4

Databases, APIs, data sources, and repository implementations.

Question 5

What lives in the Presentation Layer?

Answer 5

UI widgets, screens, and state management logic.

Question 6

What is an Entity?

Answer 6

A pure class representing a business object independent of frameworks.

Question 7

Where should you put ‘Use Cases’?

Answer 7

In the Domain layer, defining specific business actions.

Question 8

Why use Repository Interfaces in Domain?

Answer 8

To decouple the business logic from specific data sources.

Question 9

What is the main benefit for testing?

Answer 9

Core logic can be tested without UI or databases.

Question 10

What is a DTO (Data Transfer Object)?

Answer 10

A model used only for parsing JSON or SQL data.

Question 11

List out 4 folders can be in the data folder

Answer 11

1. datasources/ -> SQLite Service
2. mappers/
3. models/
4. repositories/

Question 12

List out 4 folders can be in the domain folder

Answer 12

1. entities/ # LogEntity (Pure Class)
2. failures/ # LogFailures (error classes)
3. repositories/ # LogRepository (Interface)
4. usecases/

Question 13

List out 4 folders can be in the presentation folder

Answer 13

1. dialogs/
2. providers/
3. screens/
4. widgets/