启动某个项目迁移：Enable-Migrations -ProjectName Data -StartUpProjectName MVCTest -ContextTypeName Data.InvoiceApplyInfo

指定迁移（降级至或升级至AddInvoiceApplyInfo迁移版本状态）：Update-Database -Verbose -TargetMigration:AddInvoiceApplyInfo -ProjectName Data

建立迁移文件：Add-Migration Add_model_invoiceapplyinfo -ProjectName Data

完成迁移操作并查看执行SQL：Update-Database -Verbose -ProjectName Data