Updating entity framework conceptual model
In this tutorial it is assumed that you already have the database objects created. You have to execute a script from the following file if you have not done so yet: \Program Files\Devart\dot Connect\DB2\Samples\crm_In this sample we will create a simple console application. Product Name select it; foreach (Products product in query) Console.
The properties of these entity types map to the columns in the Categories and Products tables respectively.It could be any other project type as well, but for simplicity's sake we'll use console project throughout the tutorial. Start Visual Studio and create a new console application. You prepare a query and then iterate through it as you would do with a usual collection of objects. Now let's query data from two tables united with a foreign key. The table has columns that store an auto-generated Category ID (the primary key of this table) and a string Category Name.The Products table stores product information: an auto-generated Product ID (the primary key of this table), a string Product Name, and a Category ID (a foreign key into the Categories table).
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You can find links to Entity Framework Core tutorials in the See Also section, in the end of this topic. NET Entity Framework is an object-relational mapping (ORM) framework for the . It is designed to enable developers to create data access applications by programming against a conceptual application model instead of programming directly against a relational storage schema. Replace the old code with this: Crm Demo Entities context = new Crm Demo Entities(); // Create a new category Product_Categories new Category = new Product_Categories(); new Category.