Update new-field.md (#20194)

* Update new-field.md

* Update new-field.md

* Update new-field.md

* Update new-field.md

Co-authored-by: Rick Anderson <3605364+Rick-Anderson@users.noreply.github.com>

Author: tamilselvan719

aspnetcore/tutorials/first-mvc-app/new-field.md

@@ -117,12 +117,17 @@ If all the records in the DB are deleted, the initialize method will seed the DB
 
 [!INCLUDE[](~/includes/RP-mvc-shared/sqlite-warn.md)]
 
-Delete the database and use migrations to re-create the database. To delete the database, delete the *MvcMovie.db* database file. Then run the `ef database update` command:
+Delete the database and the previous migration and use migrations to re-create the database:
 
 ```dotnetcli
+dotnet ef migrations remove
+dotnet ef database drop
+dotnet ef migrations add InitialCreate
 dotnet ef database update
 ```
 
+`dotnet ef migrations remove` removes the last migration. If there are more than one migration, delete the Migrations folder.
+
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