Data Mapper Pattern vs ActiveRecord

What are the main differences between the Data Mapper pattern and ActiveRecord?

The Data Mapper pattern separates the in-memory objects from the database, while ActiveRecord combines them, making it easier to manage data.

Can you give me an example of when to use Data Mapper over ActiveRecord?

Use Data Mapper when you need a more flexible architecture, especially in complex applications where domain logic is crucial.

What are the advantages of using ActiveRecord?

ActiveRecord simplifies database interactions with built-in methods, making it easier for developers to work with data.

Are there any downsides to using either pattern?

Yes, Data Mapper can be more complex to implement, while ActiveRecord can lead to tightly coupled code if not managed properly.