Repository Pattern

A repository is responsible to store and to retrieve your data. It is not a Data Access Layer but location for storage and there can be any database like XML, Oracle or a textfile.

In layman language we can tell repository is strongly typed classes that provides functionality for object.

There are various advantages of the Repository Pattern including:

• Business logic can be tested without need for an external source
• Database access logic can be tested separately
• No duplication of code
• Caching strategy for the datasource can be centralized
• Domain driven development is easier
• Centralizing the data access logic, so code maintainability is easier

practice: http://www.mithunvp.com/create-aspnet-mvc-6-web-api-visual-studio-2015/