![]() in order to keep it simple, let’s create just one entity “product” where we will maintain the product inventory / stock. Now, we will create entity classes for the test e-commerce store application. Nuget will automatically install the latest version of entity framework (in this example, ef 6.1.3 is being installed as this is the most recent version). Now, we need to install entity framework to your project and in order to do so, go to: package manager console. Now, we run the solution, we should see the sample web application in the browser like this: Here is the sample project in solution explorer: In the “change authentication” dialog box, we will select “no authentication” and click ok: In the new project dialog box, we will select mvc template and click on the “change authentication” button: Let’s name this sample project “efcodefirstmvcapplication”: ![]() ![]() in this example, we are going to create a test e-commerce store with a product table that we can add, edit, and delete. Let’s create a sample web application in asp.net mvc that uses entity framework (code-first approach). Here is a graphical representation of entity framework's code-first approach that helps developers in easily creating classes as the requirement and database is created automatically. these poco data classes (also known as persistence-ignorant objects), which are mapped to entities that are defined in a data model, support most of the same query, insert, update, and delete behaviors as entity types that are generated by the entity data model tools. this means that you can use "plain-old" clr objects (poco), such as existing domain objects, with your data model. The entity framework enables you to use custom data classes together with your data model without making any modifications to the data classes themselves. this approach enables us to write plain-old" clr objects (pocos) for our models and it helps in making changes to the persistence layer without impacting the models. in this approach, we do not use entity designer (.edmx). as the name implies, the classes are created first and then database is generated from the classes to fulfill the business needs. This approach is basically an opposite of data-driven approach and the focus is entities and models which is why it is known as “entity framework code first approach”. these models encapsulate complex business logic, closing the gap between business reality and code. properly applied it can lead to software abstractions called domain models. On the other hand, many developers are shifting towards the alternative way of developing (and designing) applications by using domain centric approach (domain-driven design).ĭdd is a collection of principles and patterns that help developers craft elegant object systems. in this approach, the entity framework is created from an existing database. ![]() many developers still follow this approach and the approach is commonly known as “entity framework database first approach”. hence, the traditional approach in most cases is always about building the application based on the database schema. before we dive deep into the details of code-first approach, we should understand the transference in a way the modern applications are being developed.Ĭonventionally, we have been developing data centric applications where the focus is what data is needed to justify our business needs. in other words, it allows developers to access and store data in the database via an automated mechanism. Entity framework (ef) is an object relational mapper (orm) that enables developers to work with relational data using domain-specific objects. ![]()
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