Microsoft PowerPoint - aat_in_depth.pptx

5/4/2019

copyright J.Paul Getty Trust

Introduction to the AAT

revised May 2019 For educational purposes

Dates of Hierarchical Relationship

Start and End Dates are years in the proleptic Gregorian calendar, which is the calendar produced by extending the Gregorian calendar to dates preceding its official introduction. Dates BCE are expressed as negative numbers. If the relationship currently applies, the End Date is

9999

.

Patricia Harpring © 2019 J. Paul Getty Trust. For educational purposes only. Do not distribute.

• Historical flag for the ParentIndicates if the link between the child and its parent is current or historical. Most relationships in the AAT are flagged Current

; if the flag is

Current

, it is generally not displayed to end-users. If the fl

ag is Historical, it is displayed (e.g., "H" in

 the example below).

Relationship is flagged Current, Historic

al, Both, Undetermined, or Not Applicable



Dates for the link between a child and its parent =

Display Date

,

Start Date

and

End Date

(“ca.” etc. is estimated for retrieval, hidden from end-user)



E.g., a historical relationship between

Imperial (Roman)

and

Early Imperial

Start:

-17

End:

68