ASP. NET core EF Codefirst Data Migration

When we add tables or table fields with Codefirst, Codefirst adds a table to the database to record the table structure changes (through migration changes). So how is the migration implemented, because after the installation of. NET core, using the "Package Management Console" will be an error message, the following errors

Now it's time to update the database with the command line.

The "Migrations Add" command tells the Migration Framework (Migration framework) to check that the current entity model matches the current database structure and that mismatches create the necessary code to migrate, making the entity classes and databases consistent. So now we're going to use command prompt to implement the migration.

dotnet EF Migrations Add ratingdotnet EF Database update

ASP. NET core EF Codefirst Data Migration