AspNetCore.Docs/aspnetcore/includes/scaffold-identity/migrations.md

The generated Identity database code requires Entity Framework Core Migrations. Create a migration and update the database. For example, run the following commands:

Visual Studio

In the Visual Studio Package Manager Console:

Install-Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore
Add-Migration CreateIdentitySchema
Update-Database

.NET Core CLI

dotnet ef migrations add CreateIdentitySchema
dotnet ef database update

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The "CreateIdentitySchema" name parameter for the Add-Migration command is arbitrary. "CreateIdentitySchema" describes the migration.