---
title: "FeatureSet Element (DTA)"
ms.prod: sql
ms.prod_service: sql-tools
ms.technology: tools-other
ms.topic: conceptual
dev_langs: 
  - "XML"
helpviewer_keywords: 
  - "FeatureSet element"
ms.assetid: f2070c53-4a5c-4c11-ac38-96ee200c84f0
author: markingmyname
ms.author: maghan
ms.manager: jroth
ms.reviewer: ""
ms.custom: seo-lt-2019
ms.date: 03/01/2017
---

# FeatureSet Element (DTA)

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

Contains the physical design structures (indexes or indexed views) that you would like Database Engine Tuning Advisor to use during analysis.  
  
## Syntax  
  
```  
  
<DTAInput>  
...code removed...  
    <TuningOptions>  
      <FeatureSet>...</FeatureSet>  
```  
  
## Element Characteristics  
  
|Characteristic|Description|  
|--------------------|-----------------|  
|**Data type and length**|**string**, no maximum length.|  
|**Allowed values**|**IDX_IV**<br /> Indexes and indexed views.<br /><br /> **IDX**<br /> Indexes only.<br /><br /> **IV**<br /> Indexed views only.<br /><br /> **NCL_IDX**<br /> Nonclustered indexes only.<br /><br /> Use one of these values with this element.|  
|**Default value**|**IDX**|  
|**Occurrence**|Required once for each **TuningOptions** element, unless the **DropOnlyMode** element is used. If **DropOnlyMode** is used, you cannot use **FeatureSet**. These elements are mutually exclusive.|  
  
## Element Relationships  
  
|Relationship|Elements|  
|------------------|--------------|  
|**Parent element**|[TuningOptions Element &#40;DTA&#41;](../../tools/dta/tuningoptions-element-dta.md)|  
|**Child elements**|None.|  
  
## Example  
 For a usage example of this element, see the [Simple XML Input File Sample &#40;DTA&#41;](../../tools/dta/simple-xml-input-file-sample-dta.md).  
  
## See Also  
 [XML Input File Reference &#40;Database Engine Tuning Advisor&#41;](../../tools/dta/xml-input-file-reference-database-engine-tuning-advisor.md)