
140 Dynamic Data Management in Workflow Execution
may allow running many instances of workflow applications at the same time,
either for one or more users.
5.4.6 Cost of Storage in Workflow Execution
Work [64] considers the cost of storage of files in the workflow execution
system and optimization of allocation of a part of the initial budget B to the
storage of the execution system B
W EC
and the remaining part to the cost of
the services.
That model can be further extended as follows. By default in the model
presented in Section 3.4.2, cost c
ij
is associated with service s
ij
. Taking the
storage size available for the service, various contracts might be av