Human-readable description of the pipeline's purpose.
DESCRIPTION 'Daily ETL for customer data'The DESCRIPTION clause attaches a human-readable string to the pipeline, stored as metadata in the catalog. It accepts a single-quoted string literal and is intended for documentation purposes, appearing in the GUI pipeline list and detail views. When omitted, the pipeline has no description and the catalog field remains null. This clause has no effect on execution behavior and can be combined freely with any other pipeline clause.