optionality-element-assl.md

title	description	ms.date	ms.service	ms.custom	ms.reviewer	ms.topic	author	ms.author
Optionality Element (ASSL) | Microsoft Docs	Learn about the Optionality property element in the Analysis Services Scripting Language (ASSL) schema.	7/25/2018	analysis-services	assl	kfollis	reference	kfollis	kfollis

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.