Data Access Service (DAS) overview

Data Access Service (DAS) in watsonx.data provides a unified way to access object storage, govern external engines, and audit data access. All of these are accomplished without exposing credentials or requiring complex modifications to engines, which are not controlled by watsonx.data.

DAS signature is available only internally for Data Stage and IBM Spark. IBM Spark by default connects to the watsonx.data object storage through DAS signature. Using DAS, you can generate AWS V4 Signature for S3 or S3-compatible object storage such as IBM Cloud Object Storage, MinIO, and Ceph. Additionally, you can generate a delegating SAS token for ADLS Gen1 or Gen2 storage, or an access token for GCS storage.

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