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Catalog responsbility
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modules/manage/pages/iceberg/use-iceberg-catalogs.adoc

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To read from the Redpanda-generated xref:{about-iceberg-doc}[Iceberg table], your Iceberg-compatible client or tool needs access to the catalog to retrieve the table metadata and know the current state of the table. The catalog provides the current table metadata, which includes locations for all the table's data files. You can configure Redpanda to either connect to a REST-based catalog, or use a filesystem-based catalog.
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To read from the Redpanda-generated xref:{about-iceberg-doc}[Iceberg table], your Iceberg-compatible client or tool needs access to the catalog to retrieve the table metadata and know the current state of the table. The catalog provides the current table metadata, which includes locations for all the table's data files. You can configure Redpanda to either connect to a REST-based catalog, or use a filesystem-based catalog.
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For production deployments, Redpanda recommends <<rest,using an external REST catalog>> to manage Iceberg metadata. This enables built-in table maintenance, safely handles multiple engines and tools accessing tables at the same time, facilitates data governance, and maximizes data discovery. However, if it is not possible to use a REST catalog, you can <<object-storage,use the filesystem-based catalog>> (`object_storage` catalog type), which does not require you to maintain a separate service to access the Iceberg data.
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[[rest]]
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== Connect to a REST catalog
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NOTE: Redpanda connects to an Iceberg catalog that you provision and manage. Redpanda does not create or manage the catalog service, its databases, or any associated network configuration.
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Connect to an Iceberg REST catalog using the standard https://github.com/apache/iceberg/blob/main/open-api/rest-catalog-open-api.yaml[REST API^] supported by many catalog providers. Use this catalog integration type with REST-enabled Iceberg catalog services, such as https://docs.databricks.com/en/data-governance/unity-catalog/index.html[Databricks Unity^] and https://other-docs.snowflake.com/en/opencatalog/overview[Snowflake Open Catalog^].
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