---
title: "Data Quality Services"
ms.date: "10/12/2013"
ms.prod: sql
ms.prod_service: "data-quality-services"
ms.reviewer: ""
ms.technology: data-quality-services
ms.topic: conceptual
ms.assetid: 9c6b996c-e768-4bf5-837f-5436ed9cea1d
author: swinarko
ms.author: sawinark
---
# Data Quality Services

[!INCLUDE[appliesto-ss-xxxx-xxxx-xxx-md-winonly](../includes/appliesto-ss-xxxx-xxxx-xxx-md-winonly.md)]

[!INCLUDE[ssDQSnoversionLong](../includes/ssdqsnoversionlong-md.md)] (DQS) is a knowledge-driven data quality product. DQS enables you to build a knowledge base and use it to perform a variety of critical data quality tasks, including correction, enrichment, standardization, and de-duplication of your data. DQS enables you to perform data cleansing by using cloud-based reference data services provided by reference data providers. DQS also provides you with profiling that is integrated into its data-quality tasks, enabling you to analyze the integrity of your data.  
  
 DQS consists of [!INCLUDE[ssDQSServer](../includes/ssdqsserver-md.md)] and [!INCLUDE[ssDQSClient](../includes/ssdqsclient-md.md)], both of which are installed as part of [!INCLUDE[ssCurrent](../includes/sscurrent-md.md)]. [!INCLUDE[ssDQSServer](../includes/ssdqsserver-md.md)] is a SQL Server instance feature that consists of three SQL Server catalogs with data-quality functionality and storage. [!INCLUDE[ssDQSClient](../includes/ssdqsclient-md.md)] is a SQL Server shared feature that business users, information workers, and IT professionals can use to perform computer-assisted data quality analyses and manage their data quality interactively. You can also perform data quality processes by using the [!INCLUDE[ssDQSCleansingLong](../includes/ssdqscleansinglong-md.md)] and Master Data Services (MDS) data quality functionality, both of which are based on DQS.  
  
 For information about installing DQS, see [Install Data Quality Services](../data-quality-services/install-windows/install-data-quality-services.md). If you want to upgrade your existing version of DQS to [!INCLUDE[ssCurrent](../includes/sscurrent-md.md)], see [Upgrade Data Quality Services](../database-engine/install-windows/upgrade-data-quality-services.md).  
  
 **Browse Content by Area**  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [Data Quality Client Application](../data-quality-services/data-quality-client-application.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [DQS Knowledge Bases and Domains](../data-quality-services/dqs-knowledge-bases-and-domains.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [Data Quality Projects](../data-quality-services/data-quality-projects-dqs.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [Data Cleansing](../data-quality-services/data-cleansing.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [Data Matching](../data-quality-services/data-matching.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [Reference Data Services in DQS](../data-quality-services/reference-data-services-in-dqs.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [Data Profiling and Notifications in DQS](../data-quality-services/data-profiling-and-notifications-in-dqs.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [DQS Administration](../data-quality-services/dqs-administration.md)  
  
 ![Small File Folder Icon](https://docs.microsoft.com/analysis-services/analysis-services/media/filefolder-small.png "Small File Folder Icon") [DQS Security](../data-quality-services/dqs-security.md)  
  
## See Also  
 [Introduction to Data Quality Services](../data-quality-services/introduction-to-data-quality-services.md)   
 [Data Quality Services Concepts](../data-quality-services/data-quality-services-concepts.md)   
 [DQS Resources](https://technet.microsoft.com/sqlserver/hh780961)   
 [SQL Server Resource Center](https://go.microsoft.com/fwlink/?linkID=219676)