Entity Framework Core 文档：https://docs.microsoft.com/zh-cn/ef/#pivot=efcore&panel=efcore-all
Entity Framework Core : https://docs.microsoft.com/zh-cn/ef/core/
Package Manager Console tools: 运行在 VS 中的包管理控制台 https://docs.microsoft.com/zh-cn/ef/core/miscellaneous/cli/
https://docs.microsoft.com/zh-cn/ef/core/miscellaneous/cli/dotnet
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ASP.NET Core 创建 Web API:
https://docs.microsoft.com/zh-cn/aspnet/core/web-api/?view=aspnetcore-3.0