--- title: Deduplication Method (Dataflow) description: Description The Property named Deduplication Method is available when you edit a Dataflow. It allows setting how to deduplicate the rows of a Model Object for a dedicated Dataflow. Format --- [Skip to content](https://knowledge.bigenius-x.com/deduplication-method-model-object#main-content) [Contact us](https://knowledge.bigenius-x.com/kb-tickets/new?hsLang=en) [Go to Customer Portal](https://knowledge.bigenius-x.com/customer-portal?hsLang=en) [![TRI\_Logo\_biGENIUS\_2020\_RGB\_s](https://knowledge.bigenius-x.com/hs-fs/hubfs/Marketing/TRI_Logo_biGENIUS_2020_RGB_s.png?width=150&height=42&name=TRI_Logo_biGENIUS_2020_RGB_s.png)](https://www.bigenius-x.com/) Open main navigation Close main navigation - [Contact us](https://knowledge.bigenius-x.com/kb-tickets/new) - [Go to Customer Portal](https://knowledge.bigenius-x.com/customer-portal) How can we help you? - There are no suggestions because the search field is empty. 1. [biGENIUS-X Knowledge Base](https://knowledge.bigenius-x.com/?hsLang=en) 2. [Generators](https://knowledge.bigenius-x.com/generators?hsLang=en) 3. [Properties](https://knowledge.bigenius-x.com/generators?hsLang=en#properties) # Deduplication Method (Dataflow) ### Description The **Property** named ***Deduplication Method*** is available when you [edit a Dataflow](https://knowledge.bigenius-x.com/edit-a-data-flow?hsLang=en).  It allows setting how to deduplicate the rows of a **Model Object** for a dedicated **Dataflow.** ### Format The Deduplication Method is a **List of values**. The available options are: - **None**: - No deduplication applied to the rows of the Model Object - **Distinct**: - A deduplication method based on DISTINCT is applied - The rows are deduplicated according to all the Term's values ![](https://knowledge.bigenius-x.com/hubfs/image-png-Jul-04-2023-02-55-08-4285-PM.png) - **Partition**: - A deduplication method based on a ROW NUMBER() is applied - The **PARTITION BY** depends on the Model Object Type: - Hub: the Business Key(s) ![](https://knowledge.bigenius-x.com/hubfs/image-png-Jul-04-2023-03-06-55-3444-PM.png) - - - Satellite: the Foreign Keys of Relationships (which correspond to the Business Key(s) of the Hub) ![](https://knowledge.bigenius-x.com/hubfs/image-png-Jul-04-2023-03-07-03-0326-PM.png) - - The **ORDER BY** is, by default, the same as the PARTITION BY It is possible to define another ORDER BY than the default one. For this, please set the [Deduplication Partition](https://knowledge.bigenius-x.com/deduplication-partition-model-object?hsLang=en) Property. Example: ![](https://knowledge.bigenius-x.com/hubfs/image-png-Jul-04-2023-02-40-56-0354-PM.png) ### Default Value The default value for all Model Objects is **None.**   ### Impact The value of the **Deduplication Method** is used during a load of a Dataflow for a Model Object to deduplicate the source rows before applying the business rules and the modeled transformations.   - [Getting started](https://knowledge.bigenius-x.com/getting-started?hsLang=en#main-content) - [Guidelines](https://knowledge.bigenius-x.com/getting-started?hsLang=en#guidelines) - [Start working](https://knowledge.bigenius-x.com/getting-started?hsLang=en#start-working) - [Account](https://knowledge.bigenius-x.com/getting-started?hsLang=en#account) - [General overview](https://knowledge.bigenius-x.com/general-overview?hsLang=en) - [Artificial Intelligence](https://knowledge.bigenius-x.com/artificial-intelligence?hsLang=en) - [Application Modules](https://knowledge.bigenius-x.com/application-modules?hsLang=en#main-content) - 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