---
title: "ADO MD 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 MD collections"
  - "collections [ADO MD]"
ms.assetid: 01c53429-ccc9-4077-b738-d3c1f43bd76c
author: MightyPen
ms.author: genemi
---
# ADO MD Collections

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|[Axes](../../../ado/reference/ado-md-api/axes-collection-ado-md.md)|Contains the **Axis** objects that define a cellset.|  
|[CubeDefs](../../../ado/reference/ado-md-api/cubedef-object-ado-md.md)|Contains the **CubeDef** objects that represent a cube from a multidimensional catalog.|  
|[Dimensions](../../../ado/reference/ado-md-api/dimension-object-ado-md.md)|Contains the **Dimension** objects that make up a cube.|  
|[Hierarchies](../../../ado/reference/ado-md-api/hierarchy-object-ado-md.md)|Contains the set **Hierarchy** objects from a dimension.|  
|[Levels](../../../ado/reference/ado-md-api/level-object-ado-md.md)|Contains the **Level** objects that make up a hierarchy.|  
|[Members](../../../ado/reference/ado-md-api/members-collection-ado-md.md)|Contains the **Member** objects from a level or a position along an axis.|  
|[Positions](../../../ado/reference/ado-md-api/positions-collection-ado-md.md)|Contains the **Position** objects that define a point on an axis.|  
  
## See Also  
 [ADO MD API Reference](../../../ado/reference/ado-md-api/ado-md-api-reference.md)   
 [ADO MD Code Examples](../../../ado/reference/ado-md-api/ado-md-code-examples.md)   
 [ADO MD Enumerated Constants](../../../ado/reference/ado-md-api/ado-md-enumerated-constants.md)   
 [ADO MD Methods](../../../ado/reference/ado-md-api/ado-md-methods.md)   
 [ADO MD Object Model](../../../ado/reference/ado-md-api/ado-md-object-model.md)   
 [ADO MD Objects](../../../ado/reference/ado-md-api/ado-md-objects.md)   
 [ADO MD Properties](../../../ado/reference/ado-md-api/ado-md-properties.md)