Item definition overview

A Microsoft Fabric item definition is an object that represents the structure and format from which an item is built. A Fabric item definition includes the mandatory system files that define the item's characteristics. Each item type in Fabric has different supported formats and required files (parts) that make up its definition.

Definition based APIs

Definition based APIs return a definition within the response or support providing the definition in the payload.

Definition based APIs include Get Item Definition, Update Item Definition, and Create Item with Definition.

Platform file

The platform file is a definition part that contains the item's metadata information.

• Create Item with definition - Respects the platform file if provided.
• Get Item Definition - Always returns the platform file.
• Update Item Definition - Accepts the platform file if provided, but only if you set a updateMetadata=true URL parameter.

For more information, see Automatically generated system files

Definition Details for Supported Item Types

• Eventhouse definition
• KQL Database definition
• KQL Dashboard definition
• KQL Queryset definition
• Mirrored database definition
• Notebook definition
• Reflex definition
• Report definition
• Semantic model definition
• Spark job definition