---
title: "SQL Server Database Engine Backward Compatibility | Microsoft Docs"
ms.custom: ""
ms.date: "06/12/2017"
ms.prod: sql
ms.prod_service: high-availability
ms.component: "database-engine"
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ms.suite: "sql"
ms.technology: 
  - "database-engine"
ms.tgt_pltfrm: ""
ms.topic: conceptual
helpviewer_keywords: 
  - "backward compatibility [SQL Server], Database Engine"
  - "backward compatibility [Database Engine]"
  - "deprecation [SQL Server]"
  - "Database Engine [SQL Server], backward compatibility"
ms.assetid: 10de5ec6-d3cf-42ef-aa62-1bdf3fbde841
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author: MikeRayMSFT
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manager: craigg
---
# SQL Server Database Engine Backward Compatibility
[!INCLUDE[tsql-appliesto-ss2016-xxxx-xxxx-xxx-md](../includes/tsql-appliesto-ss2016-xxxx-xxxx-xxx-md.md)]
  Topics in the backward compatibility section describe changes in behavior between versions of [!INCLUDE[ssNoVersion](../includes/ssnoversion-md.md)].  
  
|Topic|Description|  
|-----------|-----------------|  
|[Deprecated Database Engine Features in SQL Server 2017](../database-engine/deprecated-database-engine-features-in-sql-server-2017.md)|Deprecated [!INCLUDE[ssDE](../includes/ssde-md.md)] features in the 2017 release.| 
|[Deprecated Database Engine Features in SQL Server 2016](../database-engine/deprecated-database-engine-features-in-sql-server-2016.md)|Deprecated [!INCLUDE[ssDE](../includes/ssde-md.md)] features in the 2016 release.|  
|[Discontinued Database Engine Functionality in SQL Server 2016](../database-engine/discontinued-database-engine-functionality-in-sql-server-2016.md)|Discontinued [!INCLUDE[ssDE](../includes/ssde-md.md)] features in the 2016 release.|  
|[Breaking Changes to Database Engine Features in SQL Server 2017](../database-engine/breaking-changes-to-database-engine-features-in-sql-server-2017.md)|[!INCLUDE[ssDE](../includes/ssde-md.md)] feature changes that might require changes to applications.|  
|[Breaking Changes to Database Engine Features in SQL Server 2016](../database-engine/breaking-changes-to-database-engine-features-in-sql-server-2016.md)|[!INCLUDE[ssDE](../includes/ssde-md.md)] feature changes that might require changes to applications.|