# INxAttrDimDef Interface

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

Layout for `NxAttrDimDef`.

## Syntax

```
[ValueClass]
public interface INxAttrDimDef : IAbstractStructure
```

## Properties

| Name | Description |
| --- | --- |
| [Attribute](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxAttrDimDef.Attribute.htm#Qlik_Engine_INxAttrDimDef_Attribute) | If set to true, this attribute will not affect the number of rows in the cube.<br><br>JSON property name: qAttribute |
| [Def](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxAttrDimDef.Def.htm#Qlik_Engine_INxAttrDimDef_Def) | Expression or field name.<br><br>JSON property name: qDef |
| [LibraryId](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxAttrDimDef.LibraryId.htm#Qlik_Engine_INxAttrDimDef_LibraryId) | LibraryId for dimension.<br><br>JSON property name: qLibraryId |
| [SortBy](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxAttrDimDef.SortBy.htm#Qlik_Engine_INxAttrDimDef_SortBy) | Sorting.<br><br>JSON property name: qSortBy |