optionality-element-assl.md

title	Optionality Element (ASSL) | Microsoft Docs
ms.custom
ms.date	03/06/2017
ms.prod	sql-server-2016
ms.reviewer
ms.suite
ms.technology	analysis-services docset-sql-devref
ms.tgt_pltfrm
ms.topic	reference
apiname	Optionality Element
apilocation	http://schemas.microsoft.com/analysisservices/2003/engine
apitype	Schema
applies_to	SQL Server 2016 Preview
helpviewer_keywords	Optionality element
ms.assetid	6cd2ef0a-6fbe-4462-ab27-4cdfeb33f8ab
caps.latest.revision	13
author	Minewiskan
ms.author	owend
manager	erikre

Optionality Element (ASSL)

Indicates the optionality of the members for an AttributeRelationship element.

Syntax

  
<AttributeRelationship>  
   ...  
   <Optionality>...</OPtionality>  
   ...  
</AttributeRelationship>  

Element Characteristics

Characteristic	Description
Data type and length	String (enumeration)
Default value	Mandatory
Cardinality	0-1: Optional element that can occur once and only once.

Element Relationships

Relationship	Element
Parent element	AttributeRelationship
Child elements	None

Remarks

The value of this element is limited to one of the strings listed in the following table.

Value	Description
Mandatory	Each member in the related attribute has to be associated with at least one member in the attribute that owns the AttributeRelationship element.
Optional	Each member in the related attribute does not have to be associated with at least one member in the attribute that owns the AttributeRelationship element.

The enumeration that corresponds to the allowed values for Cardinality in the Analysis Management Objects (AMO) object model is xref:Microsoft.AnalysisServices.Optionality.

See Also

Attributes and Attribute Hierarchies
Properties (ASSL)