Will it be possible to add a dictionary type custom rule for applying classification based on the column names instead of data itself

Currently, the Microsoft Purview Data Map supports custom classifications based on data patterns or specific column names, primarily through regular expressions or dictionary methods. However, the existing functionality for dictionary rules focuses on the data values rather than the column names themselves.

While there is no explicit mention in the provided context about the capability to create dictionary rules based solely on column names, it is suggested that configuring patterns for column names can help minimize false positives in classifications. This implies that there may be potential for future enhancements to support your request, but as of now, it is not a supported feature.

For your specific use case, it would be beneficial to provide feedback to the Microsoft Purview team regarding this feature request, as they may consider it for future updates.

References:

• Classification best practices in the Microsoft Purview Data Map
• Custom classifications in Data Map