The National Archives Catalog

Birth Date Qualifier

Mandatory Repeatable Data Type Authority Public Element
No No Variable Character Length (8) Date Qualifier List Yes



The means for indicating an uncertain or approximate birth date.


Purpose: Alerts users to uncertain or approximate birth dates.


Relationship: This element is dependent on Birth Date. To have Birth Date Qualifier, Birth Date must be created.



Choose the appropriate term from the Date Qualifier Authority List.

Use "?" if uncertainty exists regarding the date.

Use "ca." if the date is approximate.

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