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# Database
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## Database
2021-08-16 16:28:10 +00:00
This schema defines the Database entity. A database also referred to as Database Catalog is a collection of tables.
**$id:**[**https://open-metadata.org/schema/entity/data/database.json**](https://open-metadata.org/schema/entity/data/database.json)
Type: `object`
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This schema does not accept additional properties.
### Properties
## <<<<<<< HEAD
* **id**
* Unique identifier that identifies this database instance.
* $ref: [../../type/basic.json#/definitions/uuid](../types/basic.md#uuid)
* **name** `required`
* Name that identifies the database.
* $ref: [#/definitions/databaseName](database.md#databasename)
* **fullyQualifiedName**
* Name that uniquely identifies a database in the format 'ServiceName.DatabaseName'.
* Type: `string`
* **displayName**
* Display Name that identifies this database.
* Type: `string`
* **description**
* Description of the database instance.
* Type: `string`
* **version**
* Metadata version of the entity.
* $ref: [../../type/entityHistory.json#/definitions/entityVersion](../types/entityhistory.md#entityversion)
* **updatedAt**
* Last update time corresponding to the new version of the entity in Unix epoch time milliseconds.
* $ref: [../../type/basic.json#/definitions/timestamp](../types/basic.md#timestamp)
* **updatedBy**
* User who made the update.
* Type: `string`
* **href**
* Link to the resource corresponding to this entity.
* $ref: [../../type/basic.json#/definitions/href](../types/basic.md#href)
* **owner**
* Owner of this database.
* $ref: [../../type/entityReference.json](../types/entityreference.md)
* **service** `required`
* Link to the database cluster/service where this database is hosted in.
* $ref: [../../type/entityReference.json](../types/entityreference.md)
* **serviceType**
* Service type where this database is hosted in.
* $ref: [../services/databaseService.json#/definitions/databaseServiceType](databaseservice.md#databaseservicetype)
* **location**
* Reference to the Location that contains this database.
* $ref: [../../type/entityReference.json](../types/entityreference.md)
* **usageSummary**
* Latest usage information for this database.
* $ref: [../../type/usageDetails.json](../types/usagedetails.md)
* **tables**
* References to tables in the database.
* $ref: [../../type/entityReference.json#/definitions/entityReferenceList](../types/entityreference.md#entityreferencelist)
* **changeDescription**
* Change that lead to this version of the entity.
* $ref: [../../type/entityHistory.json#/definitions/changeDescription](../types/entityhistory.md#changedescription)
* **deleted**
* When `true` indicates the entity has been soft deleted.
* Type: `boolean`
* Default: _false_
> > > > > > > a07bc411 (updated json schema and schema docs (#3219))
* **id**
* Unique identifier that identifies this database instance.
* $ref: [../../type/basic.json#/definitions/uuid](../types/basic.md#uuid)
* **name** `required`
* Name that identifies the database.
* $ref: [#/definitions/databaseName](database.md#databasename)
* **fullyQualifiedName**
* Name that uniquely identifies a database in the format 'ServiceName.DatabaseName'.
* Type: `string`
* **displayName**
* Display Name that identifies this database.
* Type: `string`
* **description**
* Description of the database instance.
* Type: `string`
* **version**
* Metadata version of the entity.
* $ref: [../../type/entityHistory.json#/definitions/entityVersion](../types/entityhistory.md#entityversion)
* **updatedAt**
* Last update time corresponding to the new version of the entity in Unix epoch time milliseconds.
* $ref: [../../type/basic.json#/definitions/timestamp](../types/basic.md#timestamp)
* **updatedBy**
* User who made the update.
* Type: `string`
* **href**
* Link to the resource corresponding to this entity.
* $ref: [../../type/basic.json#/definitions/href](../types/basic.md#href)
* **owner**
* Owner of this database.
* $ref: [../../type/entityReference.json](../types/entityreference.md)
* **service** `required`
* Link to the database cluster/service where this database is hosted in.
* $ref: [../../type/entityReference.json](../types/entityreference.md)
* **serviceType**
* Service type where this database is hosted in.
* $ref: [../services/databaseService.json#/definitions/databaseServiceType](https://github.com/open-metadata/OpenMetadata/blob/main/docs/openmetadata-apis/schemas/services/databaseservice.md#databaseservicetype)
* **location**
* Reference to the Location that contains this database.
* $ref: [../../type/entityReference.json](../types/entityreference.md)
* **usageSummary**
* Latest usage information for this database.
* $ref: [../../type/usageDetails.json](../types/usagedetails.md)
* **tables**
* References to tables in the database.
* $ref: [../../type/entityReference.json#/definitions/entityReferenceList](../types/entityreference.md#entityreferencelist)
* **changeDescription**
* Change that lead to this version of the entity.
* $ref: [../../type/entityHistory.json#/definitions/changeDescription](../types/entityhistory.md#changedescription)
* **deleted**
* When `true` indicates the entity has been soft deleted.
* Type: `boolean`
* Default: _false_
### Type definitions in this schema
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#### databaseName
* Name that identifies the database.
* Type: `string`
* Length: between 1 and 128
> > > > > > > a07bc411 (updated json schema and schema docs (#3219))
#### databaseName
* Name that identifies the database.
* Type: `string`
* The value must match this pattern: `^[^.]*$`
* Length: between 1 and 128
## <<<<<<< HEAD _This document was updated on: Tuesday, January 25, 2022_
_This document was updated on: Monday, March 7, 2022_
> > > > > > > a07bc411 (updated json schema and schema docs (#3219))