What is the difference between Atitit ORM Implementation mode Data-mapper mode and Active-record mode?

What is the difference between atitit orm Implementation mode Data-mapper mode and active-record mode?

1.1. this is from the node. js Route about mixing two ORM modes activerecord(active recording mode) and Data Mapper(map mode) 1

1.2. Obviously,the Active Record is relatively simple, but not flexible enough, and Data Mapper is flexible, but with an entity manager added complexity. 1

1.1. This is from the node. js Route about mixing two ORM modes activerecord(active recording mode) and Thinking of data Mapper (map mode)

. The essence is the difference between the blood loss model and the congestion model, which leads to the Mastery
Ddd

of necessity.

First of these two persistence modes are characterized as follows:

The activerecord (active recording mode) is a relationship between a domain model object field and a table field that stores 1:1 , that is, a single model fields corresponding to a data table, and then the model object provides a save () method is used to persist model objects to the storage layer, and the model is to know the data layer, which is coupled with the data persistence layer.

They also have the simplicity of an Active Record

Data Mapperis completely loosely coupled between the domain model object and the data table.
Domain objects are only responsible for handling business logic and do not know the data layer, which is decoupled from the data layer; Use an entity manager to persist model objects to the storage layer; The field of the model object can be any name
That you can map to different fields of the data-tier data table as long as you conform to the business model

The flexibility of the data mapper has the advantage that the field of the model object does not have to correspond to the field one by one of the datasheet.

1.2. Obviously,the Active Record is relatively simple, but not flexible enough, and Data Mapper is flexible, but with an entity manager, it adds complexity.

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What is the difference between Atitit ORM Implementation mode Data-mapper mode and Active-record mode?