TY - GEN
T1 - Approaches for Scheduling of Triggered Transactions in Real-time Active Database Systems
AU - Lam, Kam-yiu
AU - Lee, Tony S.H.
PY - 1998/8
Y1 - 1998/8
N2 - A real-time active database system (RTADBS) has to provide capabilities for timely trigger of time constrained transactions and at the same time to process them, concurrently with others transactions, in a real-time manner. Mostly, triggered transactions are critical transactions. It is highly important to commit them. Committing a triggered transaction requires meeting the deadline constraints of its triggering transaction and also the data deadlines of its accessed temporal data objects. However, the generations of triggered transactions decrease the predictability of the system as they increase the system workload and the probability of data conflicts. The authors propose different approaches for assigning deadlines and priorities to the triggered transactions with the objectives to satisfy the timing requirements of the triggered transactions especially for the more critical ones. The performance of the new approaches and their relationships with different coupling modes have been studied using simulation.
AB - A real-time active database system (RTADBS) has to provide capabilities for timely trigger of time constrained transactions and at the same time to process them, concurrently with others transactions, in a real-time manner. Mostly, triggered transactions are critical transactions. It is highly important to commit them. Committing a triggered transaction requires meeting the deadline constraints of its triggering transaction and also the data deadlines of its accessed temporal data objects. However, the generations of triggered transactions decrease the predictability of the system as they increase the system workload and the probability of data conflicts. The authors propose different approaches for assigning deadlines and priorities to the triggered transactions with the objectives to satisfy the timing requirements of the triggered transactions especially for the more critical ones. The performance of the new approaches and their relationships with different coupling modes have been studied using simulation.
KW - coupling modes
KW - priority and deadline assignment
KW - real-time active database systems
KW - scheduling
KW - triggering of transactions
UR - http://www.scopus.com/inward/record.url?scp=33750695530&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-33750695530&origin=recordpage
U2 - 10.1109/EURMIC.1998.711842
DO - 10.1109/EURMIC.1998.711842
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0-8186-8646-4
T3 - Proceedings - EUROMICRO Conference, EURMIC
SP - 476
EP - 483
BT - Proceedings - 24th EUROMICRO Conference
PB - IEEE
T2 - 24th EUROMICRO Conference, EURMIC 1998
Y2 - 25 August 1998 through 27 August 1998
ER -