--- title: Excluded from Delta Detection (Model Object) description: Excluded from Delta Detection (DeltaDetectionExcludedTerms) removes selected terms of a satellite from BG_RowHash. --- [Skip to content](https://knowledge.bigenius-x.com/excluded-from-delta-detection-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) # Excluded from Delta Detection (Model Object) **Applies to** Platform: Microsoft SQL Server · Snowflake · Snowflake dbt · Databricks · Databricks dbt · Fabric Lakehouse · Fabric Warehouse · Oracle Architecture: Data Vault Excluded from Delta Detection (`DeltaDetectionExcludedTerms`) removes selected terms of a satellite from [BG\_RowHash](https://knowledge.bigenius-x.com/bg_rowhash?hsLang=en). A change in these terms alone then starts no new version, but the terms are still loaded and stored with every new version. Available since Generator 2.4. ### Where to set it Set the property when you [edit a model object](https://knowledge.bigenius-x.com/edit-a-model-object?hsLang=en) of one of these types: - Satellite, Link Satellite, Multi-Active Satellite - Effectivity Satellite, Effectivity Link Satellite - Record Tracking Satellite, Record Tracking Link Satellite - Non-Historized Satellite, Non-Historized Link Satellite - The Business Vault variants of these types ### Values and default The value is a selection of terms of the model object. The default is empty, so every descriptive term is part of BG\_RowHash. The picker offers neither Default Terms, business keys, identities nor foreign keys. ### Effect on generated output The hashing view leaves the selected terms out of the BG\_RowHash input. When another term changes, the new version stores the current values of all terms, including the excluded ones. Validation reports these cases: - Error ID-10066: a selected term does not exist on the model object. - Warning ID-10067: a selected term is a foreign key or takes no part in change detection. The exclusion is ignored. - Warning ID-10068: every descriptive term is excluded. Changes to these terms create no new versions. ### Example A Satellite on Microsoft SQL Server has the terms `CUSTOMER`, `CUSTOMER_TYPE` and `CUSTOMER_SINCE`, and Excluded from Delta Detection set to `CUSTOMER_SINCE`. The hashing view calculates: ``` CAST(HASHBYTES('SHA1', CAST('' AS VARCHAR(MAX)) + ISNULL([CUSTOMER], N'_NULL_') + N'_' + ISNULL([CUSTOMER_TYPE], N'_NULL_')) AS VARBINARY(20)) AS [BG_RowHash] ``` Three loads at 10:00, 11:00 and 12:00 deliver the same `CUSTOMER`, which the result below leaves out. Load 1 delivers `Business` and `2019-03-01`. Load 2 changes only `CUSTOMER_SINCE` to `2019-04-01`. Load 3 changes `CUSTOMER_TYPE` to `Enterprise`. The result view shows two versions: ``` CUSTOMER_TYPE CUSTOMER_SINCE ValidFrom ValidTo Business 2019-03-01 2026-10-27 10:00 2026-10-27 12:00 Enterprise 2019-04-01 2026-10-27 12:00 9999-12-31 00:00 ``` Without the exclusion, load 2 adds a third version that starts at 11:00. ### Related articles - Reference: [BG\_RowHash](https://knowledge.bigenius-x.com/bg_rowhash?hsLang=en), [Historization Type (Term and Relationship)](https://knowledge.bigenius-x.com/historization-type-term-and-relationship?hsLang=en) - See also: [Change detection and historization](https://knowledge.bigenius-x.com/change-detection-and-historization?hsLang=en), [How biGENIUS-X builds hash values](https://knowledge.bigenius-x.com/how-bigenius-x-builds-hash-values?hsLang=en), [Create a Satellite](https://knowledge.bigenius-x.com/create-a-satellite?hsLang=en), [Generators Release - 2.4.0](https://knowledge.bigenius-x.com/generators-release-2.4.0?hsLang=en) - [Getting started](https://knowledge.bigenius-x.com/getting-started?hsLang=en#main-content) - 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