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API > API/Runtime > API/Runtime/TypedElementFramework > API/Runtime/TypedElementFramework/FHierarchyRegistrationParams
Selects which storage backend implements this hierarchy.
| Name | EBackend |
| Type | enum |
| Header File | /Engine/Source/Runtime/TypedElementFramework/Public/Elements/Interfaces/TypedElementDataStorageInterface.h |
| Include Path | #include "Elements/Interfaces/TypedElementDataStorageInterface.h" |
Syntax
enum EBackend
{
Legacy,
Relations,
}
Values
| Name | Remarks |
|---|---|
| Legacy | Column-on-row storage (FTedsHierarchyRegistrar). Existing behavior. |
| Relations | Relation-row storage with interval encoding for O(1) descendant queries. |