![]() This displays all the entities for the selected tables and the relationships between them, as shown below:ĮDM adds the provider and connection string settings in the App.config file, as shown below: Open EDM designer by double clicking on School.edmx. After clicking on Finish, a School.edmx file will be added into your project. You don't need to import functions manually, like it was necessary prior to Entity Framework 6.0.ħ. The third checkbox, Import selected stored procedures and functions into entity model, automatically creates Function Imports for the stored procedures and functions. If this checkbox is unchecked, then it will only include the Standard reference navigation property, but not the StandardId. To represent this in the model, the Student entityset includes a StandardId property with Standard reference navigation property. The second checkbox, Include foreign key columns in the model, includes a foreign key property explicitly to represent the foreign key.įor example, the Student table has a one-to-many relationship with the Standard table. Similarly, relationships between the models will be pluralized if the table has a one-to-many or a many-to-many relationship with other tables.įor example, the Student table has many-to-many relationship with Course table, so the Student entity set will have plural name Courses for the collection navigation property of Course type. Pluralize or singularize generated object names checkbox singularizes an entityset name, if the table name in the database is plural.įor example, if the SchoolDB database contains the Students table name, then entity set would be singular Student. You can change the Model Namespace if you want. Select the Tables, Views and SPs you want, keep the default checkboxes selected and click Finish. Next step will display all the Tables, Views and Stored Procedures (SP) in the database. Note: If you already have installed the latest version of Entity Framework using NuGet manager, then this step of the wizard will no longer appear.Ħ. We will use Entity Framework 6.0 in the basic tutorials so select Entity Framework 6.0 and click Next. In this step, you need to choose the version of Entity Framework. This will add a connection string to your app.config file with the Entities name.Ĭlick Next after you set up your DB connection.ĥ. for the local database) and select your database name and click the OK button. In the Connection Properties popup, provide the server name (. If this is the first time you are creating an EDM for your database, then you need to create a new connection by clicking on the New Connection. In this step, you need to create a connection with your existing database. We are using database-first approach here, so select the EF Designer from database option and click Next.Ĥ. ![]() Entity Data Model Wizard in Visual Studio (2012/2015/2017) opens with four options to select from: EF Designer from database for the database-first approach, Empty EF Designer model for the model-first approach, Empty Code First modelĪnd Code First from database for Code-First approach. ![]() In the popup, select ADO.NET Entity Data Model and provide an appropriate name to the EDM ('School' in this case) and click the Add button.ģ. Now, add Entity Data Model by right clicking on the project in the solution explorer -> Add -> New Item. and make sure that the project's target framework is. Open Visual Studio and create a console project. Let's create a simple EDM for the School database using Visual Studio (2012\2015\2017) and Entity Framework 6.ġ. Entity Data Model is a model that describes entities and the relationships between them. Here, we are going to create an Entity Data Model (EDM) for an existing database in database-first approach and understand the basic building blocks.Įntity Framework uses EDM for all the database-related operations.
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