Dear Tane and Rahul
Thank you very much for your comments.
What I was trying to do was to classify Nodes or Sources with the a birth date and death date etc.
Valid data types
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This topic describes the data types that can be used in NVivo to store values in:
Dataset fields (columns)
Node and source classification attributes
Data type Used to store Examples Text Any textual content—letters, numbers, or characters. In codable dataset columns, you can use this data type to store responses to open-ended survey questions. In classifying dataset columns, use this data type to store range names (Age 20-29 years), city names (Memphis) or country names (Brazil). Integer A number with no decimal places 874 Decimal A number with decimal places 874.95 Date A calendar date (month, day of month and year) 10/28/2010 Time A time (hours, minutes and seconds) 06:10:00 Date/Time A calendar date and time within a single value 10/28/2010 06:10:00 Boolean Value pairs True or False, Yes or No, 0 or 1 Source Shortcut Used only in datasets to store a link to another source in the project. n/a—this data type is automatically selected when you import binary objects from a database table or view.
E.G.: Tomaso Albinoni: 08-06-1671 as date of birth and 17-01-1751 as date of death; or Gajus Julius Caesar Octavianus 23-09-63 BC – 19-08-14 AD (could this be written as date -00630819? or something like that), so you could avoid creating an BC and AD attribute. Now all this of course is connected with a specific religuosly defined chronology, but it is internationally used at the moment.
What I am interested in is search for specific dates, specific years and intervals both within the BC period (e.g.: 120-20 BC), the AD period (e.g.: 04-10-1420 to 30-09-1510) and crossing the BC-AD periodes (e.g.: 31 BC to 19 AD).
Is this at all possible with NVivo?
Whatever your answer thank you for your attempts and your time.