[DDI-ADG] time spreadsheet

[Wendy Thomas]

Need to include "geographic time" in the list. This can be different than
the data time stamp. Aggregate data is often retabulated for new
goegraphies such as congressional districts (ex. 2000 data for 2002
congressional district geography).

Calender date: This was provided in order to allow for alternative
calender systems particularly if relevant to the data. This is
hypothetical but if I were collecting data related to a specific date in
the Jewish Calender I need to know that date. This is particularly true if
I were collecting over a number of years or months as the relationships
between the Jewish Calender and Georgian calender shift and you'd never
see the relationship if using only the Georgian calender.

While this seems a bit of a stretch, we have frequently discussed the
ability to use DDI for historical data derived from historical
administrative records...kept in the calender of the time and place.

SECURITY: version 2.0 4.3.4, 4.4.6

security?    (ATT == ID, xml-lang, source, date)

<!-- 4.3.4 Security (security)                                        -->
<!--                                                                  -->
<!-- Provides information regarding levels of access to the variable,
      e.g., public, subscriber, need to know. The ISO standard for
      dates (YYYY-MM-DD) is recommended for use with the date
      attribute.                                                       -->

<!ELEMENT security   (#PCDATA | %a.phrase; | %e.form;)*                 >
<!ATTLIST security
     %a.global;
     %a.date;                                                            >




Wendy L. Thomas                          Phone: +1 612.624.4389
Data Access Core Director		 Fax:   +1 612.626.8375
Minnesota Population Center              Email: wlt at pop.umn.edu
University of Minnesota
50 Willey Hall
225 19th Avenue South
Minneapolis, MN 55455