keyuniquenessguarantee-element-assl.md

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

KeyUniquenessGuarantee Element (ASSL)

Indicates whether the relationship between the attribute key and its name, and the relationship to related attributes, is guaranteed to be valid.

Syntax

  
<DimensionAttribute>  
   ...  
   <KeyUniquenessGuarantee>...</KeyUniquenessGuarantee>  
   ...  
</DimensionAttribute>  

Element Characteristics

Characteristic	Description
Data type and length	Boolean
Default value	False
Cardinality	0-1: Optional element that can occur once and only once.

Element Relationships

Relationship	Element
Parent element	DimensionAttribute
Child elements	None

Remarks

Analysis Services uses the KeyUniquenessGuarantee element to optimize query construction when it retrieves members from the underlying data source for this attribute.

The element that corresponds to the parent of KeyUniquenessGuarantee in the Analysis Management Objects (AMO) object model is xref:Microsoft.AnalysisServices.DimensionAttribute.

See Also

Properties (ASSL)