# relationship type

## relationship type

**This is a synonym for attribute name.**

## attribute name

The concept that represents the attribute type in a defining relationship or postcoordinated expression.

#### Notes

* An *attribute name* with an attribute value is referred to as an attribute value pair.
* An attribute value pair can represent a defining characteristic of a concept or an expression refinement.
* In the *relationship file* , the *attribute name* is represented by the relationship.*typeId* and the attribute value by the relationship.*destinationId*.\_\
  \_
* Theconcepts that can be used to name attributes are:

1. ```
    * [ 116680003 | Is a (attribute)|](http://snomed.info/id/116680003 "116680003 | Is a \(attribute\) |") and
   ```
   * subtypes of [410662002 | Concept model attribute|](http://snomed.info/id/410662002)

## Alternatives

* **Relationship type**

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