> ## Documentation Index
> Fetch the complete documentation index at: https://private-7c7dfe99-parallel-read-in-order-multi-part.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> Reference guides for connecting ClickHouse to data lake catalogs including AWS Glue, Unity, REST, Lakekeeper, Nessie, OneLake, and SeaweedFS.

# Catalog guides

ClickHouse integrates with a range of data lake catalogs through the [`DataLakeCatalog`](/reference/engines/database-engines/datalake) database engine. The following guides walk through connecting ClickHouse to each supported catalog, including configuration, authentication, and querying examples.

| Catalog | Description |
| - | - |
| [AWS Glue](/guides/use-cases/data-warehousing/glue-catalog) | Query Iceberg tables registered in the AWS Glue Data Catalog from data stored in S3. |
| [Databricks Unity Catalog](/guides/use-cases/data-warehousing/unity-catalog) | Connect to Databricks Unity Catalog for Delta Lake and Iceberg tables. |
| [Iceberg REST Catalog](/guides/use-cases/data-warehousing/rest-catalog) | Use any catalog implementing the Iceberg REST specification, such as Tabular. |
| [Lakekeeper](/guides/use-cases/data-warehousing/lakekeeper-catalog) | Connect to the Lakekeeper Catalog for Iceberg tables. |
| [Project Nessie](/guides/use-cases/data-warehousing/nessie-catalog) | Query Iceberg tables using the Nessie Catalog with Git-like data version control. |
| [Microsoft OneLake](/guides/use-cases/data-warehousing/onelake-catalog) | Query Iceberg tables in Microsoft Fabric OneLake. |
| [Polaris catalog](/guides/use-cases/data-warehousing/polaris-catalog) | Connect to the Polaris catalog for Iceberg tables. |
| [Snowflake Horizon catalog](/guides/use-cases/data-warehousing/horizon-catalog) | Read and write Snowflake-managed Iceberg tables through Horizon Catalog. |
| [BigLake Metastore](/guides/use-cases/data-warehousing/biglake-catalog) | Query Iceberg tables registered in BigLake Metastore. |
| [SeaweedFS](/guides/use-cases/data-warehousing/seaweedfs-catalog) | Query and write Iceberg tables in SeaweedFS S3 Table Buckets through the built-in Iceberg REST catalog. |