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

ISBN-10: 3540676309

ISBN-13: 9783540676300

CAiSE 2000 was once the twelfth within the sequence of overseas meetings on complex info structures Engineering. within the 12 months 2000 the convention lower back to Stockholm the place it was once geared up the first actual time. considering the fact that that 12 months, 1989, the CAiSE meetings have built into a major discussion board for the presentation and alternate of analysis effects and functional reviews in the box of data structures Engineering. the target of the CAiSE convention sequence is to collect researchers and practitioners within the box of knowledge platforms engineering to satisfy every year so one can talk about evolving learn concerns 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 middle of study and improvement for a number of the best IT and communications businesses in Europe and certainly, on the planet. In song with this atmosphere, a tremendous subject matter of CAiSE 2000 used to be "information platforms and prone in a digitized world". This subject displays the huge advancements in communique know-how, together with the expanding use of net and WWW, that has taken position during the last years, and that has resulted in greater verbal exchange and more straightforward details entry as a rule. additionally, this improvement has initiated alterations within the manner organisations cooperate and trade.

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For a database, this is specified in the database schema. For a website, on the other hand, pertinent data is usually hidden inside an HTML document, so we need to specify the exact location of those data. Towards Extensible Information Brokers Based on XML 35 We shall call these four components of a service description as INPUT BINDING INPUT, OUTPUT, and OUTPUT BINDING, respectively. Figure 1 is an example of an Amazon search service description. 1 Input and Output Descriptions Information sources usually allow only a limited number of query forms to be submitted.

2 Multiservice Nodes In some composite service processes there is the need of invoking multiple, parallel instances of the same type of service. For instance, a restaurant reservation brokering service may request rates and availability to several restaurants that provide on-line access to these information. In order to allow the specification of these kinds of process semantics, eFlow includes the notion of multiservice node. The multiservice node is a particular kind of node that allows for multiple, parallel activation of the same service node.

One complication that can arise here is that some input variables may not be instantiated beforehand. e, when the value for the variable $P1 is available from the AmazonSearch. Thus the result composer needs to wait for that value, assign that value to the input variable of the ConverterService, generate a new query, and send it to the wrapper. 1 Related Work Information Integration Much work has been done on query planning and rewriting for information mediators [16]. Recently, XML-related issues have also been studied in this area.

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Advanced Information Systems Engineering: 12th International Conference, CAiSE 2000 Stockholm, Sweden, June 5–9, 2000 Proceedings by Dennis Tsichritzis (auth.), Benkt Wangler, Lars Bergman (eds.)


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