Description: The Data Mapper is a design pattern used in software development to separate business logic from data access logic. This pattern allows in-memory objects, which represent domain entities, to remain decoupled from their representation in a database. This means that changes in the database structure do not directly affect the objects in the application, facilitating maintenance and evolution of the software. The Data Mapper acts as an intermediary that translates between the data structures of the database and the objects in the application, allowing developers to work with objects instead of database records. This approach not only improves code readability but also promotes reuse and testing of individual components. In the context of various programming languages and frameworks, the use of this pattern has become common, where object-relational mapping (ORM) techniques are implemented to manage database interaction more efficiently and organized.
