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Add "Apply migrations" section to MVC validation tutorial (#36817)
* Initial plan * Add Apply migrations section to MVC validation tutorial for all supported versions Co-authored-by: wadepickett <10985336+wadepickett@users.noreply.github.com> * Apply suggestion from @wadepickett * Reinsert review note for Details and Delete methods * Update validation7.md with review note Added a note about reviewing the app and improving methods. * Reinsert review note for Details and Delete methods * Update validation9.md * Add link to Part 8 tutorial on EF Core migrations * Apply suggestions from code review Add links to new field tutorial per tdykstra review Co-authored-by: Wade Pickett <wpickett@microsoft.com> * Apply suggestion from @wadepickett * Add Part 8 link to validation.md Additional resources; update EF Core migrations links in new-field tutorials Agent-Logs-Url: https://github.com/dotnet/AspNetCore.Docs/sessions/6b4f3ff0-45af-46b6-aafa-bde7f5bf725e Co-authored-by: wadepickett <10985336+wadepickett@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: wadepickett <10985336+wadepickett@users.noreply.github.com> Co-authored-by: Wade Pickett <wpickett@microsoft.com>
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‎aspnetcore/tutorials/first-mvc-app/new-field.md‎

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description: Part 8 of tutorial series on ASP.NET Core MVC.
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monikerRange: '>= aspnetcore-3.1'
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ms.author: wpickett
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ms.date: 02/24/2026
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ms.date: 03/26/2026
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uid: tutorials/first-mvc-app/new-field
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---
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# Part 8, add a new field to an ASP.NET Core MVC app
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:::moniker range=">= aspnetcore-10.0"
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In this section [Entity Framework](/ef/core/get-started/aspnetcore/new-db) Migrations is used to:
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In this section [Entity Framework Core migrations](/ef/core/managing-schemas/migrations/) is used to:
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* Add a new field to the model.
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* Migrate the new field to the database.

‎aspnetcore/tutorials/first-mvc-app/new-field/includes/new-field6.md‎

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:::moniker range="= aspnetcore-6.0"
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In this section [Entity Framework](/ef/core/get-started/aspnetcore/new-db) Code First Migrations is used to:
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In this section [Entity Framework Core migrations](/ef/core/managing-schemas/migrations/) is used to:
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* Add a new field to the model.
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* Migrate the new field to the database.

‎aspnetcore/tutorials/first-mvc-app/new-field/includes/new-field7.md‎

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:::moniker range="= aspnetcore-7.0"
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In this section [Entity Framework](/ef/core/get-started/aspnetcore/new-db) Code First Migrations is used to:
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In this section [Entity Framework Core migrations](/ef/core/managing-schemas/migrations/) is used to:
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* Add a new field to the model.
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* Migrate the new field to the database.

‎aspnetcore/tutorials/first-mvc-app/new-field/includes/new-field8.md‎

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:::moniker range="= aspnetcore-8.0"
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In this section [Entity Framework](/ef/core/get-started/aspnetcore/new-db) Code First Migrations is used to:
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In this section [Entity Framework Core migrations](/ef/core/managing-schemas/migrations/) is used to:
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* Add a new field to the model.
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* Migrate the new field to the database.

‎aspnetcore/tutorials/first-mvc-app/validation.md‎

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---
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title: Part 9, add validation to an ASP.NET Core MVC app
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ai-usage: ai-assisted
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author: wadepickett
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description: Part 9 of tutorial series on ASP.NET Core MVC.
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monikerRange: '>= aspnetcore-3.1'
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ms.author: wpickett
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ms.date: 01/22/2026
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ms.date: 03/26/2026
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uid: tutorials/first-mvc-app/validation
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---
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* The `DataType` attribute can enable MVC to choose the right field template to render the data (the `DisplayFormat` if used by itself uses the string template).
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## Apply migrations
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Some validation attributes affect the database schema. For example, `[Required]` makes a column `NOT NULL` and `[StringLength(60)]` limits the column type to `nvarchar(60)`. Run a migration to keep the database schema consistent with the model.
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# [Visual Studio](#tab/visual-studio)
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From the **Tools** menu, select **NuGet Package Manager > Package Manager Console**.
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In the PMC, enter the following commands:
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```powershell
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Add-Migration New_DataAnnotations
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Update-Database
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```
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# [Visual Studio Code](#tab/visual-studio-code)
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[!INCLUDE[](~/includes/RP-mvc-shared/sqlite-warn.md)]
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Delete the Migrations folder and the database file, and then run the following .NET CLI commands:
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```dotnetcli
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dotnet ef migrations add InitialCreate
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```
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```dotnetcli
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dotnet ef database update
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```
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For more information, see [Resetting all migrations](/ef/core/managing-schemas/migrations/managing?tabs=dotnet-core-cli#resetting-all-migrations).
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---
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## Additional resources
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* [Part 8, Add a new field (EF Core migrations)](xref:tutorials/first-mvc-app/new-field)
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* [Working with Forms](xref:mvc/views/working-with-forms)
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* [Globalization and localization](xref:fundamentals/localization)
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* [Introduction to Tag Helpers](xref:mvc/views/tag-helpers/intro)

‎aspnetcore/tutorials/first-mvc-app/validation/includes/validation6.md‎

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[!code-csharp[](~/tutorials/first-mvc-app/start-mvc/sample/MvcMovie60/Models/Movie.cs?name=AttrOneLine)]
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## Apply migrations
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Some validation attributes affect the database schema. For example, `[Required]` makes a column `NOT NULL` and `[StringLength(60)]` limits the column type to `nvarchar(60)`. Run a migration to keep the database schema consistent with the model.
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# [Visual Studio](#tab/visual-studio)
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From the **Tools** menu, select **NuGet Package Manager > Package Manager Console**.
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In the PMC, enter the following commands:
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```powershell
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Add-Migration New_DataAnnotations
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Update-Database
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```
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# [Visual Studio Code](#tab/visual-studio-code)
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[!INCLUDE[](~/includes/RP-mvc-shared/sqlite-warn.md)]
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Delete the Migrations folder and the database file, and then run the following .NET CLI commands:
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```dotnetcli
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dotnet ef migrations add InitialCreate
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```
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```dotnetcli
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dotnet ef database update
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```
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For more information, see [Resetting all migrations](/ef/core/managing-schemas/migrations/managing?tabs=dotnet-core-cli#resetting-all-migrations).
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---
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In the next part of the series, we review the app and make some improvements to the automatically generated `Details` and `Delete` methods.
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## Additional resources
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* [Part 8, Add a new field (EF Core migrations)](xref:tutorials/first-mvc-app/new-field)
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* [Working with Forms](xref:mvc/views/working-with-forms)
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* [Globalization and localization](xref:fundamentals/localization)
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* [Introduction to Tag Helpers](xref:mvc/views/tag-helpers/intro)

‎aspnetcore/tutorials/first-mvc-app/validation/includes/validation7.md‎

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[!code-csharp[](~/tutorials/first-mvc-app/start-mvc/sample/MvcMovie70/Models/Movie.cs?name=snippet_AttrOneLine)]
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## Apply migrations
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Some validation attributes affect the database schema. For example, `[Required]` makes a column `NOT NULL` and `[StringLength(60)]` limits the column type to `nvarchar(60)`. Run a migration to keep the database schema consistent with the model.
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# [Visual Studio](#tab/visual-studio)
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From the **Tools** menu, select **NuGet Package Manager > Package Manager Console**.
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In the PMC, enter the following commands:
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```powershell
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Add-Migration New_DataAnnotations
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Update-Database
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```
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# [Visual Studio Code](#tab/visual-studio-code)
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[!INCLUDE[](~/includes/RP-mvc-shared/sqlite-warn.md)]
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Delete the Migrations folder and the database file, and then run the following .NET CLI commands:
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```dotnetcli
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dotnet ef migrations add InitialCreate
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```
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```dotnetcli
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dotnet ef database update
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```
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For more information, see [Resetting all migrations](/ef/core/managing-schemas/migrations/managing?tabs=dotnet-core-cli#resetting-all-migrations).
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---
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In the next part of the series, we review the app and make some improvements to the automatically generated `Details` and `Delete` methods.
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## Additional resources
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* [Part 8, Add a new field (EF Core migrations)](xref:tutorials/first-mvc-app/new-field)
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* [Working with Forms](xref:mvc/views/working-with-forms)
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* [Globalization and localization](xref:fundamentals/localization)
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* [Introduction to Tag Helpers](xref:mvc/views/tag-helpers/intro)

‎aspnetcore/tutorials/first-mvc-app/validation/includes/validation8.md‎

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[!code-csharp[](~/tutorials/first-mvc-app/start-mvc/sample/mvcmovie80/Models/Movie.cs?name=snippet_AttrOneLine)]
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## Apply migrations
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Some validation attributes affect the database schema. For example, `[Required]` makes a column `NOT NULL` and `[StringLength(60)]` limits the column type to `nvarchar(60)`. Run a migration to keep the database schema consistent with the model.
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# [Visual Studio](#tab/visual-studio)
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From the **Tools** menu, select **NuGet Package Manager > Package Manager Console**.
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In the PMC, enter the following commands:
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```powershell
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Add-Migration New_DataAnnotations
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Update-Database
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```
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# [Visual Studio Code](#tab/visual-studio-code)
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[!INCLUDE[](~/includes/RP-mvc-shared/sqlite-warn.md)]
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Delete the Migrations folder and the database file, and then run the following .NET CLI commands:
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```dotnetcli
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dotnet ef migrations add InitialCreate
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```
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```dotnetcli
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dotnet ef database update
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```
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For more information, see [Resetting all migrations](/ef/core/managing-schemas/migrations/managing?tabs=dotnet-core-cli#resetting-all-migrations).
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---
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In the next part of the series, we review the app and make some improvements to the automatically generated `Details` and `Delete` methods.
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## Additional resources
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* [Part 8, Add a new field (EF Core migrations)](xref:tutorials/first-mvc-app/new-field)
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* [Working with Forms](xref:mvc/views/working-with-forms)
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* [Globalization and localization](xref:fundamentals/localization)
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* [Introduction to Tag Helpers](xref:mvc/views/tag-helpers/intro)
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> [Previous](~/tutorials/first-mvc-app/new-field.md)
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> [Next](~/tutorials/first-mvc-app/details.md)
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:::moniker-end
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:::moniker-end

‎aspnetcore/tutorials/first-mvc-app/validation/includes/validation9.md‎

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[!code-csharp[](~/tutorials/first-mvc-app/start-mvc/sample/mvcmovie90/Models/Movie.cs?name=snippet_AttrOneLine)]
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## Apply migrations
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Some validation attributes affect the database schema. For example, `[Required]` makes a column `NOT NULL` and `[StringLength(60)]` limits the column type to `nvarchar(60)`. Run a migration to keep the database schema consistent with the model.
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# [Visual Studio](#tab/visual-studio)
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From the **Tools** menu, select **NuGet Package Manager > Package Manager Console**.
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In the PMC, enter the following commands:
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```powershell
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Add-Migration New_DataAnnotations
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Update-Database
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```
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# [Visual Studio Code](#tab/visual-studio-code)
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[!INCLUDE[](~/includes/RP-mvc-shared/sqlite-warn.md)]
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Delete the Migrations folder and the database file, and then run the following .NET CLI commands:
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```dotnetcli
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dotnet ef migrations add InitialCreate
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```
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```dotnetcli
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dotnet ef database update
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```
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For more information, see [Resetting all migrations](/ef/core/managing-schemas/migrations/managing?tabs=dotnet-core-cli#resetting-all-migrations).
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---
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In the next part of the series, we review the app and make some improvements to the automatically generated `Details` and `Delete` methods.
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## Additional resources
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* [Part 8, Add a new field (EF Core migrations)](xref:tutorials/first-mvc-app/new-field)
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* [Working with Forms](xref:mvc/views/working-with-forms)
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* [Globalization and localization](xref:fundamentals/localization)
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* [Introduction to Tag Helpers](xref:mvc/views/tag-helpers/intro)

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