Proceeding further, you will see the comparison between EF6 and EF Core. When an entity has the property of generic collection type, it is known as collective navigation property. Entity Framework Core is the new and improved version of Entity Framework for .NET Core applications. Pranaya Rout has published more than 3,000 articles in his 11-year career.
Entity Framework allows you to develop and maintain data-oriented apps with less code than traditional applications. As per the above figure, Entity Framework fits between the business entities (Domain Classes) and the database. It saves the data in the business properties entities and also retrieves the data from the database and converts it into the business entity’s object automatically. It is the most crucial class when it comes to working with EF 6 or EF Core. It helps execute the create, read, update, and delete commands in a database schema. It is also used to configure domain classes, map databases, track changes, and store cache.
Entity States
For this, we need to create a Connection Object with the database, then Open the Connection, Create the Command Object and execute the Command using Data Reader or Data Adapter. And then we create DataSet or DataTables to store the data in memory to perform different types of Operations on the Data as per the business requirements. Entity Framework (EF) is an object-relational mapper for .NET developers that allows them to work with relational data using domain-specific objects. It eliminates the majority of the data-access code that developers must routinely write. Queries against the object model are written using the LINQ-to-Entities (L2E) query language. EF API translates LINQ-to-Entities queries to SQL queries for relational databases using EDM and also converts results back to entity objects.
If this is not clear at this moment how it works, don’t worry we will discuss everything in detail in our upcoming articles. Please use the below SQL script to create the database EF_Demo_DB, and tables Departments and Employees, and populate the tables with sample what is entity framework data. This list is created based on the most notable features and also from frequently asked questions about Entity Framework. It is an enhancement to ADO.NET that gives developers an automated mechanism for accessing & storing the data in the database.
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It saves the data in the database which are stored in the properties of the business entities (domain classes) and also retrieves the data from the database and converts it to business entities objects automatically. Entity Framework (EF) is an open source ORM framework for .NET applications supported by Microsoft. EF simplifies mapping between objects in your software to the tables and columns of a relational database. Entity Framework was first released in 2008, Microsoft’s primary means of interacting between .NET applications and relational databases.
Entity Framework is an Object Relational Mapper (ORM) which is a type of tool that simplifies mapping between objects in your software to the tables and columns of a relational database. The C# Entity Framework is a set of ADO.NET technologies that aid in developing data-driven software. C# Entity framework is an Object Relational Mapping (ORM) framework that gives developers an automated way to store and access databases. The Entity Framework allows developers to work with data at a higher level of abstraction.
Introduction to Entity Framework
Entity Framework is an open-source object-relational mapper framework for .NET applications supported by Microsoft. It increases the developer’s productivity as it enables developers to work with data using objects of domain-specific classes without focusing on the underlying database tables and columns where this data is stored. It eliminates the need for most of the data-access code which is used to interact with the database that developers usually need to write. It provides an abstract level to the developers to work with a relational table and columns by using the domain-specific object.
Entity Framework is an ORM Tool and ORMs Tools are basically used to increase the developer’s productivity by reducing the redundant task of doing CRUD operation against a database in a .NET Application. Run the application and notice that Departments and Employees data are displayed as expected as shown in the below image. We have achieved all this without writing a single line of ADO.NET code.
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EF Core supports two development approaches 1) Code-First 2) Database-First. EF Core mainly targets the code-first approach and provides little support for the database-first approach because the visual designer or wizard for DB model is not supported as of EF Core. It uses EDM in building SQL queries from LINQ queries, building INSERT, UPDATE, and DELETE commands, and transform database result into entity objects.
In this scenario, the same context class is used to retrieve and save entities. These source-specific providers abstract the ADO.NET interfaces used to connect to the database while programming against the conceptual schema. It uses a command tree to translate standard SQL languages like LINQ into native SQL expressions, which it then executes on the given DBMS system. The Object Services layer includes the Object Context, representing the interaction session between the applications and the data source.
Basic Workflow in Entity Framework
Learn Entity Framework using simple yet practical examples on EntityFrameworkTutorial.net for free. While using this site, you agree to have read and accepted our terms
of use and privacy policy. In code, you might want to work with objects in an object oriented fashion. This website provides tutorials with examples, code snippets, and practical insights, making it suitable for both beginners and experienced developers.
- It uses a command tree to translate standard SQL languages like LINQ into native SQL expressions, which it then executes on the given DBMS system.
- Pranaya Rout has published more than 3,000 articles in his 11-year career.
- Please use the below SQL script to create the database EF_Demo_DB, and tables Departments and Employees, and populate the tables with sample data.
- Change the Model Namespace to “EmployeeModel” and click on the “Finish” button as shown in the below image.
- In this scenario, a different context is used to retrieve and save data.
The above figure represents how an entity framework interacts with the domain class and database. It provides a connection between the business entity and data tables in the database. It saves data stored in the properties of business entities and also retrieves data from the database and converts it to business entities objects automatically.
I have a small question and request regarding the code-first approach with Entity Framework Core. The following figure describes where the Entity Framework present in your application. EF Core continues to support the following features and concepts, same as EF 6. However, it can also be used with standard .NET 4.5+ framework based applications. Once you click on the Next button, it will open a popup asking you to choose the Entity Framework version as shown below. From this window, select Entity Framework 6.x and click on the Next button as shown in the below image.
