Repository Pattern Unit of Work

Repository pattern are mostly used where we need to modify the data before passing to the next stage . It centralizes data logic or business logic and service logic. It gives a substitution point for the unit tests.

A Repository pattern is a design pattern that mediates data from and to the Domain and Data Access Layers ( like Entity Framework Core / Dapper). Repositories are classes that hide the logics required to store or retreive data.

The repository pattern is intended to create an abstraction layer between the data access layer and the business logic layer of an application . It is a data access pattern that prompts a more loosely coupled approach to data access.2 Ara 2020

Repository: Mediates between the domain and data mapping layers using a collection-like interface for accessing domain objects. He himself categorizes the pattern as “Object-Relational Metadata Mapping “.