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# Metrics
This schema defines the Metrics entity. Metrics are measurements computed from data such as `Monthly Active Users` . Some of the metrics that measures used to determine performance against an objective are called KPIs or Key Performance Indicators, such as `User Retention` .
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**$id:** [**https://open-metadata.org/schema/entity/data/metrics.json** ](https://open-metadata.org/schema/entity/data/metrics.json )
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Type: `object`
## Properties
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* **id** `required`
* Unique identifier that identifies this metrics instance.
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* $ref: [../../type/basic.json\#/definitions/uuid ](../types/basic.md#types-definitions-in-this-schema )
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* **name** `required`
* Name that identifies this metrics instance uniquely.
* Type: `string`
* Length: between 1 and 64
* **fullyQualifiedName**
* A unique name that identifies a metric in the format 'ServiceName.MetricName'.
* Type: `string`
* Length: between 1 and 64
* **description**
* Description of metrics instance, what it is, and how to use it.
* Type: `string`
* **href**
* Link to the resource corresponding to this entity.
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* $ref: [../../type/basic.json\#/definitions/href ](../types/basic.md#types-definitions-in-this-schema )
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* **owner**
* Owner of this metrics.
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* $ref: [../../type/entityReference.json ](../types/entity-reference.md )
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* **service** `required`
* Link to service where this metrics is hosted in.
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* $ref: [../../type/entityReference.json ](../types/entity-reference.md )
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* **usageSummary**
* Latest usage information for this database.
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* $ref: [../../type/usageDetails.json ](../types/usage-details.md )
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