What are stamping attributes and Name some Stamping attributes?

Stamping attributes can be used (in the data dictionary only) to indicate that certain fields in file definitions should be automatically "stamped" during INSERT and/or UPDATE operations:

Attribute Description
USRC When a field with this attribute is in a file it should always contain the user profile name of the user that created the record.

USRU When a field with this attribute is in a file, it should always contain the user profile name of the user that last updated the record or be blank, if the record has never been updated.

JNMC When a field with this attribute is in a file it should always contain the name of the OS/400 job that was used to create the record

DATC When a field with this attribute is in a file it should always contain the date that the record was created. All DAT date stamps are 6 digits long in system date format.

TIMC When a field with this attribute is in a file it should always contain the time that the record was created. All time stamps are 6 digits long in the format HHMMSS.