Download Advanced Information Systems Engineering: 12th International by Dennis Tsichritzis (auth.), Benkt Wangler, Lars Bergman PDF

By Dennis Tsichritzis (auth.), Benkt Wangler, Lars Bergman (eds.)

CAiSE 2000 was once the twelfth within the sequence of foreign meetings on complicated details structures Engineering. within the yr 2000 the convention back to Stockholm the place it used to be geared up the first actual time. for the reason that that yr, 1989, the CAiSE meetings have built into a major discussion board for the presentation and trade of analysis effects and functional stories in the box of data structures Engineering. the target of the CAiSE convention sequence is to assemble researchers and practitioners within the box of data platforms engineering to fulfill every year for you to speak about evolving study matters and functions during this box. The CAiSE convention sequence additionally goals to supply a chance for younger scientists to set up relationships with senior scientists of their components of curiosity. Stockholm is a crucial heart of study and improvement for a number of the top IT and communications businesses in Europe and certainly, on the earth. In track with this setting, a massive topic of CAiSE 2000 used to be "information platforms and companies in a digitized world". This topic displays the immense advancements in conversation expertise, together with the expanding use of net and WWW, that has taken position during the last years, and that has ended in larger communique and more straightforward info entry in most cases. additionally, this improvement has initiated alterations within the method companies cooperate and trade.

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Additional info for Advanced Information Systems Engineering: 12th International Conference, CAiSE 2000 Stockholm, Sweden, June 5–9, 2000 Proceedings

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2. It can be determined by the number of service providers able to provide a given service. For instance, for the award ceremony service, we may want to contact all restaurant in the San Francisco Bay Area that can host a specified number of guests. It can be equal to the number of elements in a case packet variable of type list. In this case each service node instance receives one and only one of the list items as input parameter. The value of such item will affect service selection and execution.

This situation can affect many instances, and it is practically unfeasible to separately modify each single instance. Bulk changes may also be needed when a new, improved version of a process is defined. If, for instance, a new law forces a modification of a process, then running instances will need to respect the new constraints as well. 1 Ad-hoc Changes Ad-hoc changes are modifications applied to a single, running process instance. eFlow allows two types of ad-hoc changes: modifications of the process schema and modifications of the process instance state.

18 F. Casati et al. These include dynamic service discovery, multiservice nodes, and generic nodes. In the following we present an overview of these features. 1 Dynamic Service Discovery A service node represents the invocation of a basic or composite service. Besides defining the data that the node is allowed to read and modify, and possibly a deadline to manage delays in service execution, a service node specification includes the description of the service to be invoked. com provider. While useful in some situations, such a static service binding is often too rigid, since it does not allow to: − − − select the appropriate service depending on the customer's requirements: for instance, some customers may prefer a low-cost e-mail campaign, while other may prefer advertisements via TV, radio stations, or web sites; decouple service selection from the process definition: different service processes may require an advertisement service, and the selection criteria may need to be defined at the company level rather than at the composite service level; dynamically discover the best currently available service that fits the need of a specific customer.

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