TY - GEN
T1 - Dynamic relationships and their propagation and concurrency semantics in object-oriented databases
AU - Sapir, Amir
AU - Gudes, Ehud
N1 - Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 1999.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Object-oriented databases has rich semantics, which enables the definition of various relationships among objects. Sharing levels and composition types necessitate the definition of whether, and to which extent, should a composed object propagate a message it receives, to its composing objects (propagation rules). Current solutions refer to a system with stable connections, so propagation values can be set at the design stage. Turning a compound object into a distributed collection of simpler ones, some of which are shared, necessitates defining exact protocols for transaction processing and concurrency control. The information system described contains complex relations, which vary on a daily basis. The paper examines the various update operations from relations creation point of view, and suggests an approach for defining these new relations and updating the propagation values dynamically. Thus, reflecting the changing nature of relations.
AB - Object-oriented databases has rich semantics, which enables the definition of various relationships among objects. Sharing levels and composition types necessitate the definition of whether, and to which extent, should a composed object propagate a message it receives, to its composing objects (propagation rules). Current solutions refer to a system with stable connections, so propagation values can be set at the design stage. Turning a compound object into a distributed collection of simpler ones, some of which are shared, necessitates defining exact protocols for transaction processing and concurrency control. The information system described contains complex relations, which vary on a daily basis. The paper examines the various update operations from relations creation point of view, and suggests an approach for defining these new relations and updating the propagation values dynamically. Thus, reflecting the changing nature of relations.
KW - Composite object
KW - Dynamic relation creation
KW - Message object
KW - Propagation rules
UR - http://www.scopus.com/inward/record.url?scp=26944500932&partnerID=8YFLogxK
U2 - 10.1007/3-540-48521-x_8
DO - 10.1007/3-540-48521-x_8
M3 - Conference contribution
AN - SCOPUS:26944500932
SN - 3540662251
SN - 9783540662259
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 94
EP - 111
BT - Next Generation Information Technologies and Systems - 4th International Workshop, NGITS 1999, Proceedings
A2 - Pinter, Ron Y.
A2 - Tsur, Shalom
PB - Springer Verlag
T2 - 4th International Workshop on Next Generation Information Technologies and Systems, NGITS 1999
Y2 - 5 July 1999 through 7 July 1999
ER -