Attributes whose values are not organized in an enumerated list or hierarchy. A standard attribute contains information about a record. An assignment from a standard attribute is known as a standard attribute value (or KVP, key-value pair). Each record is described by a set of attribute values.
A standard attribute differs from a managed attribute in that it does not have a hierarchy or an enumeration of attribute values attached to it. Standard attributes (along with managed attributes) are intended for display once the end user has searched or navigated to a record set or an individual record. Standard attributes are described by a type of schema record — Property Description Records (PDRs).