Question

......... a logical atttributes ​

Answer 1

Explanation:

The Logical Attribute Report for a type lists mappings that have already been used for that type in addition to those used for alias attributes in the Type and Attribute Management utility. The creation of logical attributes is a feature of the LogicalIdentifierFactory.

Answer 2

Logical attributes contain values which are stored in different database tables than other attributes in the entity. ... IsLogical property to detect if an attribute is a logical attribute.