---
title: "ADO Collections | Microsoft Docs"
ms.prod: sql
ms.prod_service: connectivity
ms.technology: connectivity
ms.custom: ""
ms.date: "01/19/2017"
ms.reviewer: ""
ms.topic: conceptual
helpviewer_keywords: 
  - "ADO collections [ADO]"
  - "collections [ADO]"
ms.assetid: b5e1d26d-b41d-4e35-8c7c-972426473dfb
author: MightyPen
ms.author: genemi
---
# ADO Collections
The relationships between these collections and the ADO objects are represented in the [ADO Object Model](../../../ado/reference/ado-api/ado-object-model.md).  
  
 Each collection can contain its corresponding object. For example, an [Error](../../../ado/reference/ado-api/error-object.md) object can be contained in an [Errors](../../../ado/reference/ado-api/errors-collection-ado.md) collection. For more information about objects, see [ADO Objects](../../../ado/reference/ado-api/ado-objects-and-interfaces.md) or a specific object topic.  
  
|||  
|-|-|  
|[Errors](../../../ado/reference/ado-api/errors-collection-ado.md)|Contains all the **Error** objects created in response to a single provider-related failure.|  
|[Fields](../../../ado/reference/ado-api/fields-collection-ado.md)|Contains all the **Field** objects of a **Recordset** object.|  
|[Parameters](../../../ado/reference/ado-api/parameters-collection-ado.md)|Contains all the **Parameter** objects of a **Command** object.|  
|[Properties](../../../ado/reference/ado-api/properties-collection-ado.md)|Contains all the **Property** objects for a specific instance of an object.|  
  
## See Also  
 [ADO API Reference](../../../ado/reference/ado-api/ado-api-reference.md)   
 [ADO Dynamic Properties](../../../ado/reference/ado-api/ado-dynamic-properties.md)   
 [ADO Enumerated Constants](../../../ado/reference/ado-api/ado-enumerated-constants.md)   
 [Appendix B: ADO Errors](../../../ado/guide/appendixes/appendix-b-ado-errors.md)   
 [ADO Events](../../../ado/reference/ado-api/ado-events.md)   
 [ADO Methods](../../../ado/reference/ado-api/ado-methods.md)   
 [ADO Object Model](../../../ado/reference/ado-api/ado-object-model.md)   
 [ADO Objects and Interfaces](../../../ado/reference/ado-api/ado-objects-and-interfaces.md)   
 [ADO Properties](../../../ado/reference/ado-api/ado-properties.md)