Variable Time Span
A span is variable if its duration is dependent on the assumed context.
Given a specific setting, any span is either a fixed span or a variable span. An obvious example of a variable span is “1 month” in the Gregorian calendar. Its duration may be any of 28, 29, 30, and 31 days, depending on which particular month is intended. The span “1 h” is fixed because it always has a duration of 60 min.
- 2.Jensen CS, Dyreson CE, editors. A consensus glossary of temporal database concepts – February 1998 version. In Etzion O, Jajodia S, Sripada S, editors. Temporal databases: research and practice, LNCS 1399. Berlin: Springer; 1998. p. 367–405.Google Scholar