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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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< b id = "httpsopen-metadata.orgschemaentitydatametrics.json" > & #36 ; id: https://open-metadata.org/schema/entity/data/metrics.json</ b >
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Type: `object`
## Properties
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- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/id" > id</ b > `required`
- Unique identifier that identifies this metrics instance.
- & #36 ; ref: [../../type/basic.json#/definitions/uuid ](#....typebasic.jsondefinitionsuuid )
- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/name" > name</ b > `required`
- Name that identifies this metrics instance uniquely.
- Type: `string`
- Length: between 1 and 64
- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/fullyQualifiedName" > fullyQualifiedName</ b >
- A unique name that identifies a metric in the format 'ServiceName.MetricName'.
- Type: `string`
- Length: between 1 and 64
- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/description" > description</ b >
- Description of metrics instance, what it is, and how to use it.
- Type: `string`
- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/href" > href</ b >
- Link to the resource corresponding to this entity.
- & #36 ; ref: [../../type/basic.json#/definitions/href ](#....typebasic.jsondefinitionshref )
- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/owner" > owner</ b >
- Owner of this metrics.
- & #36 ; ref: [../../type/entityReference.json ](#....typeentityreference.json )
- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/service" > service</ b > `required`
- Link to service where this metrics is hosted in.
- & #36 ; ref: [../../type/entityReference.json ](#....typeentityreference.json )
- < b id = " #https://open -metadata.org/schema/entity/data/metrics.json/properties/usageSummary" > usageSummary</ b >
- Latest usage information for this database.
- & #36 ; ref: [../../type/usageDetails.json ](#....typeusagedetails.json )
