What value appears in Caboodle if a lookup column is null in Clarity?

In the context of the Caboodle data model, when a lookup column is null in Clarity, it is represented by the value -1 in Caboodle. This is a standard practice within many data systems where a specific numerical code is used to signify the absence of a valid lookup reference. In this case, -1 serves as an explicit marker that indicates no associated data exists for that particular column in the source system.

Understanding this mapping is crucial for data integration and ETL (Extract, Transform, Load) processes as it ensures that downstream applications and reports can interpret and handle null values consistently. The use of -1 instead of a more traditional null or empty value helps to avoid confusion in data processing and provides a standardized approach to handle missing information in lookup relationships.