How many Primary ID fields can exist in a schema?

In Adobe Experience Platform, a schema is a foundational structure that defines the data model for a dataset. Within this schema, the Primary ID field plays a critical role as it uniquely identifies a record and ensures data integrity.

Having one Primary ID allows for a standardized approach to record identification, which is crucial for various functions, including data ingestion, querying, and integrating with other systems. This singular focus not only streamlines data management but also helps avoid potential conflicts or confusion that may arise from having multiple identifiers trying to fulfill this fundamental role.

While additional fields may be defined within the schema for various purposes, only one Primary ID is designated to maintain clarity and consistency in how each record is identified within the data structure. This ensures a robust and reliable dataset, enabling effective analysis and insight generation.