Filters








4 Hits in 2.3 sec

The TSQL2 Data Model [chapter]

Christian S. Jensen, Richard T. Snodgrass, Michael D. Soo
1995 The TSQL2 Temporal Query Language  
James Clifford was helpful in understanding structural aspects of models of time. Curtis Dyreson and Nick Kline provided helpful comments on a previous draft.  ...  Support was provided in part by the Danish Natural Science Research Council through grants 11-9675-1 SE, 11-1089-1 SE, 11-9675-1 SE, and 11-0061; the National Science Foundation through grants IRI-8902707  ...  Then R is represented by a relation schema R in Ben-Zvi's data model as follows.  ... 
doi:10.1007/978-1-4615-2289-8_10 fatcat:qickish7ljd5nc4ln2fbrjpppy

Extending existing dependency theory to temporal databases

C.S. Jensen, R.T. Snodgrass, M.D. Soo
1996 IEEE Transactions on Knowledge and Data Engineering  
Normal forms play a central role in the design of relational databases. Several normal forms for temporal relational databases have been proposed.  ...  This is the first thorough survey of work in these areas.  ...  ACKNOWLEDGMENTS This work was conducted while the first author visited the University of Arizona. Funding was provided in part by the U.S.  ... 
doi:10.1109/69.536250 fatcat:humzbg4njre53dcx62uk2aw7ue

"Not as Sheep Led to Slaughter"? On Trauma, Selective Memory, and the Making of Historical Consciousness

Feldman
2013 Jewish Social Studies  
By reconstructing major points of the trajectory of these opposites during the past thousand years, this article lays bare the workings of "selective memory" in the making of Jewish historical consciousness  ...  In this forgotten past, the contested victim trope-"as sheep to slaughter"that aroused much concern in the wake of the Holocaust had in fact been alive for centuries.  ...  The present article seeks to reverse this temporal vector.  ... 
doi:10.2979/jewisocistud.19.3.139 fatcat:utnirq3y4nc4llzyin4r6cwzqa

Valid-Time Selection and Projection [chapter]

Suchen Hsu, Christian S. Jensen, Richard T. Snodgrass
1995 The TSQL2 Temporal Query Language  
namely Ben-Zvi's TRM and Ariav's TOSQL.  ...  Ben-Zvi's TRM Ben-Zvi was the first person to propose a temporal data model with three different times, termed effective time, registration time, and deletion time [3] .  ... 
doi:10.1007/978-1-4615-2289-8_13 fatcat:6zv5s2iqv5bnzokjuct4qrpyum