... logic 11 time 17absolute time 11cyclical time 13dimension 38timestamp 10relative time 13, 16 user-defined data type 12 time change objects 42 Time Geography 5, 16, 19– 26 space- time path 16, 20–25potential ... 61 methods 66 , 69 , 75, 76 overview 102properties 66 , 72, 74, 77scenarios 63 –77version management 77structural compatibility 36 sub-classing 37sub-typing 37 table versioning 42taxonomy of time ... PARKES, D. and THRIFT, N. (eds) Timing Space and Spacing Time, Vol. 2, Human Activity and Time Geography, Lund: Royal University of Lund,pp. 198–213.ORNSTEIN, R.E., 1 969 , On the Experience of Time, ...