TY - GEN
T1 - Accessing temporal data objects in mobile computing environments
AU - Wong, Arthur C. S.
AU - Lee, Victor C.S.
AU - Lam, Kwok-Wa
PY - 2004
Y1 - 2004
N2 - In mobile computing environments, many real life applications involve transaction processing with temporal data objects which are updated periodically by external environment. Transaction in temporal database not only has to meet the transaction deadline, but also the data deadline of temporal objects. Traditional concurrency control algorithms used in real-time database are no longer suitable for temporal database. In this paper, a new optimistic concurrency control algorithm, OCC-AVI is devised for processing mobile read-only transactions with the above deadline requirements. Based on the absolute validity interval (AVI) information, read-only transactions at mobile clients can autonomously choose to read a valid value of a temporal object from local cache or pull an updated value from the server. Experimental results show that OCC-AVI can significantly improve the system performance.
AB - In mobile computing environments, many real life applications involve transaction processing with temporal data objects which are updated periodically by external environment. Transaction in temporal database not only has to meet the transaction deadline, but also the data deadline of temporal objects. Traditional concurrency control algorithms used in real-time database are no longer suitable for temporal database. In this paper, a new optimistic concurrency control algorithm, OCC-AVI is devised for processing mobile read-only transactions with the above deadline requirements. Based on the absolute validity interval (AVI) information, read-only transactions at mobile clients can autonomously choose to read a valid value of a temporal object from local cache or pull an updated value from the server. Experimental results show that OCC-AVI can significantly improve the system performance.
UR - http://www.scopus.com/inward/record.url?scp=3042544384&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-3042544384&origin=recordpage
U2 - 10.1109/ITCC.2004.1286506
DO - 10.1109/ITCC.2004.1286506
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0769521088
SN - 9780769521084
VL - 1
SP - 502
EP - 506
BT - International Conference on Information Technology: Coding Computing, ITCC
T2 - International Conference on Information Technology: Coding Computing, ITCC 2004
Y2 - 5 April 2004 through 7 April 2004
ER -