---
title: Create a Same as Link
description: "A Model Object of type Same as Link can be created in the Silver Layer.\nWhat is a Same as Link\nIn a Data Vault model, a Same-As Link Model Object is a one-level deep hierarchy that maps similar terms (synonyms) of business keys to a single master term or business key."
---

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# Create a Same as Link

A **Model Object** of type ***Same as Link*** can be created in the **Silver** Layer.

### What is a Same as Link

In a Data Vault model, a **Same-As Link** Model Object is a one-level deep hierarchy that **maps similar terms (synonyms) of business keys to a single master term or business key**.

### Use case example

We take customer data from 2 source systems. Some customers exist in the two source systems but are created with different hash keys in the Customer Hub. We want to identify these different versions of a customer as unique.

In this example, we will create a mapping table between some customers in the sample database *AdventureWorks*. Let's consider that Persons with the same *FirstName* and *LastName* are the same people.

Creation of the Customer's Account Numbers mapping for the example:

```
/*Master table with examples of duplicated customers if we take a look only to Firstname and Lastname:AccountNumber FirstName LastNameAW00016377 Jordan AdamsAW00020387 Jordan AdamsAW00026574 Jordan AllenAW00019835 Jordan AllenAW00015903 Abigail BarnesAW00029215 Abigail Barnes*/--DROP TABLE [Sales].[DuplicatedCustomerConsolidation];CREATE TABLE [Sales].[DuplicatedCustomerConsolidation]([AccountNumberMaster] varchar(10),[AccountNumberDuplicate] varchar(10));INSERT INTO [Sales].[DuplicatedCustomerConsolidation] VALUES ('AW00016377','AW00020387');INSERT INTO [Sales].[DuplicatedCustomerConsolidation] VALUES ('AW00026574','AW00019835');INSERT INTO [Sales].[DuplicatedCustomerConsolidation] VALUES ('AW00015903','AW00029215');
```

### Creation steps

There are two possibilities to create a ***Same as Link* Model Object**:

- [Create a Model Object with the Wizard](https://knowledge.bigenius-x.com/create-a-model-object-with-the-wizard?hsLang=en): 
    - **Recommended** possibility
    - Use the Wizard **Create a Same as Link from a Stage or a Raw Vault Composite**that contains the following steps: 
          - [Create Model Object](https://knowledge.bigenius-x.com/wizard-step-create-model-object?hsLang=en)
          - [Create Dataflow](https://knowledge.bigenius-x.com/wizard-step-create-dataflow?hsLang=en)
          - [Create Relations](https://knowledge.bigenius-x.com/wizard-step-create-relations?hsLang=en): number = 2 with roles *Customer\_Master* and *Customer\_Duplicate*
          - [Map Foreign Key Terms](https://knowledge.bigenius-x.com/wizard-step-map-foreign-key-terms?hsLang=en)
          - [Add to View](https://knowledge.bigenius-x.com/wizard-step-add-to-view?hsLang=en)
- Create a Model Object manually: 
    - **Not recommended** possibility
    - [Create a Model Object](https://knowledge.bigenius-x.com/create-a-model-object?hsLang=en) of type Same as Link in the Silver Layer
    - [Create a Dataflow Set](https://knowledge.bigenius-x.com/create-a-data-flow-set?hsLang=en)
    - [Add a Model Object to the Dataflow Set](https://knowledge.bigenius-x.com/add-a-model-object-into-a-data-flow-set?hsLang=en): add the Stage or Raw Vault Composite Model Object

- - [Add a Relationship](https://knowledge.bigenius-x.com/add-a-relationship?hsLang=en) to the first corresponding Hub
    - [Edit the Foreign Key Terms](https://knowledge.bigenius-x.com/edit-a-term?hsLang=en): set them as Business Key
    - Add a second relationship to the same Hub
    - Edit the Role names (See [Have several Relationships to the same Model Object](https://knowledge.bigenius-x.com/have-several-relationships-to-the-same-object-in-an-object?hsLang=en)) with: 
          - First Relationship with the Hub: *Customer\_Master*
          - Second Relationship with the same Hub: *Customer\_Duplicate*
    - [Map the Foreign Key Terms](https://knowledge.bigenius-x.com/map-a-source-term-with-a-target-term?hsLang=en): select the target mode and manually map the Foreign Key Terms to the corresponding Source Terms: 
          - FK for the Role *Customer\_Master* with the Source Term containing the master value of the BK
          - FK for the Role *Customer\_Duplicate* with the Sourchavingtaining the duplicate value of the BK

### Properties

A ***Same as Link*** **Model Object** can be configured through the following **Properties**: 

- [Foreign Key Mode](https://knowledge.bigenius-x.com/foreign-key-mode-model-object?hsLang=en)
- [Implementation Type](https://knowledge.bigenius-x.com/implementation-type-model-object?hsLang=en)
- [Deduplication Method](https://knowledge.bigenius-x.com/deduplication-method-model-object?hsLang=en) or [Optimization Method](https://knowledge.bigenius-x.com/optimization-method-model-object?hsLang=en) (Only for Spark Generator)
  
  <https://knowledge.bigenius-x.com/deduplication-partition-model-object?hsLang=en>
- [Deduplication Partition](https://knowledge.bigenius-x.com/deduplication-partition-model-object?hsLang=en) or [Optimization Method Columns](https://knowledge.bigenius-x.com/optimization-method-columns-model-object?hsLang=en) (Only for Spark Generator)
- [File format](https://knowledge.bigenius-x.com/file-format-model-object?hsLang=en) (Only for Spark Generator)
- [Use Sequential Dataflow Execution](https://knowledge.bigenius-x.com/use-sequential-dataflow-execution-model-object?hsLang=en) (Only for Spark Generator)

### Default Terms

A ***Same as Link*****Model Object** will include the following **Default Terms**:  

- [BG\_LoadTimestamp](https://knowledge.bigenius-x.com/bg_loadtimestamp?hsLang=en)
- [BG\_SourceSystem](https://knowledge.bigenius-x.com/bg_sourcesystem?hsLang=en)
- <https://knowledge.bigenius-x.com/bg_sourcesystem?hsLang=en>[Link\_HK](https://knowledge.bigenius-x.com/link_hk?hsLang=en)

 

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