In Amazon DataZone, subscription requests and approved or granted subscriptions for read access to the assets are managed by subscription approvers. A subscription approver for an asset is determined by the publishing agreement with which this asset was published into the Amazon DataZone catalog.
When a subscription to an Amazon Redshift table or view is approved, Amazon DataZone can automatically add the subscribed asset to all the data warehouse environments within the project, so that members of the project can query the data using the Amazon Redshift query editor link within their environments. Under the hood, Amazon DataZone, creates the necessary grants and datashares between the source and the subscription target.
The process of granting access varies depending on where the source database (publisher) and the target database (subscriber) are located.
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Same cluster, same database - if data must be shared within the same database, Amazon DataZone grants permissions directly on the source table.
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Same cluster, different database - if data must be shared across two databases within the same cluster, Amazon DataZone creates a view in the target database and permissions are granted on the created view.
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Same account different cluster - Amazon DataZone creates a datashare between the source and target cluster and creates a view on top of the shared table. Permissions are granted on the view.
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Cross-account - same as above but an additional step is required to authorize cross-account datashare on the producer cluster side and another step to associate the data share on consumer cluster side.
Note
If a new data warehouse environment is added to the project after the subscribed Amazon Redshift assets have been automatically added to the existing data warehouse environments, you have to manually add these subscribed Amazon Redshift assets to this new data warehouse environment. You can do this by choosing the Add grant option in the Data tab of the project's overview page in the Amazon DataZone data portal.
Make sure that your publishing and subscribing Amazon Redshift clusters meet all requirements for Amazon Redshift datashares. For more information, see Amazon Redshift Developer Guide.
Note
Amazon DataZone supports automatically granting subscriptions to both Amazon Redshift Cluster and Amazon Redshift Serverless assets.
Cross-Region data sharing using Amazon Redshift is not supported.
