> TEMPER didn't help with this either. I think it also recommends
> just leaving the unknown end date blank. No spec that I've seen has
> a way of indicating "a future date that /will/ end at some point,
> but we don't know when".
=== (My emphases are indicated by => <=)
Record as a single date or a range of dates as appropriate. A range
of dates should always be inclusive =>unless<= the unit of description
is a record-keeping system (or part thereof) in active use.
5.3.4 Dates of the relationship
Purpose: To indicate the dates of duration of the relationship with
another corporate body, person or family.
Rule: Record when relevant the commencement date of the relationship
or succession date and, =>when relevant<=, the cessation date of the
relationship. Specify in the Rules and/or conventions element (5.4.3)
any systems of dating used, e.g. ISO 8601.
TEMPER allows the above, though it adds:
A missing start or end point indicates an open-ended range. In
general, a missing start point is strongly discouraged because it
disturbs sorting among records from other sources, e.g., shifting a
modern date range so that it appears near prehistoric dates;
usually, it works better at least to approximate the start point.
1860~-1872 Around 1860 and up to 1872.
Charles Blair Co-Director, Digital Library Development Center
773-702-8459 University of Chicago Library
[log in to unmask] http://www.lib.uchicago.edu/~chas/