Download e-book for kindle: Advanced Topics In Database Research by Siau K.

By Siau K.

ISBN-10: 1591404711

ISBN-13: 9781591404712

ISBN-10: 1591404738

ISBN-13: 9781591404736

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Figure 21 plots average WI elapsed time for different delays affecting A6 instances. The continuous line shows results where C restructuring takes place on WI with delayed A6 instances. For delays over 20%, the behavior of this line is the same as that presented in Figure 19 by the continuous line. The slight difference is at the start of the line. 8 seconds. 4 seconds. It means a lower gain on C restructuring than that depicted in Figure 19, and only delays under 3% are properly managed with C restructuring at 25% checkpoint.

The Prototype System CWf-Flex We have developed the first prototype system in PUCRS (Ruiz, Copstein & Oliveira, 2003). The so-called CWf-Flex aims to implement an ActivityFlow environment to describe and execute workflow processes, based primarily on the use of open-source tools. This prototype uses a simplified ActivityFlow model CWf (Bastos & Ruiz, 2001) to represent the structural and functional enterprise elements involved in business processes, such as enterprise activities, human resources, machines, and so forth.

The state of A changes from begin to commit if A commits and to abort if A or its parent aborts. If A’s root activity commits, then its state becomes done. When A is a composite activity, A enters the commit state if all its component activities legally terminate, that is, commit or abort. If an activity aborts, then all its children that are in begin state are aborted and its committed children, however, are compensated for. We call this property termination-sensitive dependency (Liu & Pu, 1998b) between an activity AC and its parent activity AP, denoted by AP ~> AC.

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Advanced Topics In Database Research by Siau K.

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