which folder should i create data access factory in mvc

#WHICH FOLDER SHOULD I CREATE DATA ACCESS FACTORY IN MVC UPDATE#
#WHICH FOLDER SHOULD I CREATE DATA ACCESS FACTORY IN MVC CODE#

With a repository introduced, the above figure can be changed to: An in-memory or local pseudo-database would do the trick. Additionally, testing your controllers becomes easy because the testing framework need not run against the actual database access code. In doing so you are benefited by having a simple point of change in case modifications are necessary.

#WHICH FOLDER SHOULD I CREATE DATA ACCESS FACTORY IN MVC CODE#

A repository isolates all the data access code from rest of the application. Thus a repository acts like a middleman between the rest of the application and the data access logic. (Read more about repository pattern here.) Mediates between the domain and data mapping layers using a collection-like interface for accessing domain objects. The following line summarizes the purpose of the Repository pattern: To tackle this shortcoming Repository pattern can be introduced. And any future modifications also need to be done at two places. For example, if an application is modifying a customer from two controllers, each controller will repeat the same code. This design can cause code duplication and the controller is susceptible to change even for a minute change in the data access logic. Although the above application works as expected it suffers from the drawback that the database access code (creating data context, writing queries, manipulating data, persisting changes etc.) is embedded directly inside the action methods. The EF in turn talks with the underlying SQL Server database.

#WHICH FOLDER SHOULD I CREATE DATA ACCESS FACTORY IN MVC UPDATE#

They also INSERT, UPDATE and DELETE data using the data context and DbSet. In this case your application would do something like this:Īs you can see, various actions of the Customer controller (not all are shown in the figure) directly instantiate the EF data context and fire queries to retrieve the data. Let’s further assume that you are using Entity Framework for database access. The Customer controller class has several action methods that ultimately perform typical CRUD (Create, Read, Update and Delete) operations on the underlying database. Consider, for example, that you have an ASP.NET MVC controller named CustomerController. The simplest approach is to write all the data access code in the main application itself. Most of the business applications need to access data residing in one or the other data store. It also illustrates how a repository can be built around your entities. This article discusses the basics of Repository pattern in the context of Entity Framework and ASP.NET MVC. The Repository pattern is a popular way to achieve such an isolation. One of the important aspects of this strategy is the separation between the physical database, queries and other data access logic from the rest of the application. Introduction to the Repository Pattern in C#ĭata driven web applications need to have a neat strategy for data access.

Which folder should i create data access factory in mvc