Read e-book online Advanced Information Systems Engineering: 11th International PDF

By Ivar Jacobsen (auth.), Matthias Jarke, Andreas Oberweis (eds.)

This ebook constitutes the refereed lawsuits of the eleventh overseas convention on complex details platforms Engineering, CAiSE'99 held in Heidelberg, Germany in June 1999.
The 27 revised complete papers offered including 12 brief study papers and invited contributions have been rigorously chosen from a complete of 168 submissions. The papers are equipped in topical sections on elements, info platforms administration, technique engineering, information warehouses, technique modeling, CORBA and dispensed info platforms, workflow platforms, heterogeneous databases, and data structures dynamics.

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Read Online or Download Advanced Information Systems Engineering: 11th International Conference, CAiSE"99 Heidelberg, Germany, June 14—18, 1999 Proceedings PDF

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Extra info for Advanced Information Systems Engineering: 11th International Conference, CAiSE"99 Heidelberg, Germany, June 14—18, 1999 Proceedings

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The actor that initiates the conversation (the online shopper) is called the customer of the conversation. The actor that accepts conversation requests is called the performer of the conversation. An actor can participate in multiple (possibly concurrent) conversations in different roles. For example, Lotus Notes could use the services of SAP R/3 to check the availability of products. Thus, Lotus Notes would be the customer of SAP R/3 for this particular conversation specification. Next, we identify dialog specifications which are process steps within each of the conversations (catalog/item view, shopping cart dialog etc.

In a next step, the application developer implements rules (event handlers) for each request specification that appears in a dialog. This event handler at run time has to return a dialog object to be displayed to the user in the next process step. Each rule has access (via database variables) to the contents and requests of previous dialogs in the current conversation. The shop also uses a SAP R/3 system for invoices, accounting and product availability checks. All client conversations share a common conversation with the SAP R/3 system which effectively serializes client dialog steps.

Contrary to object interactions via message passing, this “form-based” or “document-based” style of interaction at the level of dialogs also fits well the (semi-)formal interaction between humans. For example, we are all used to a form-based interaction with public authorities. We consider the ability to abstract from the modalities of an interaction (local/remote, synchronous/asynchronous, short-term/persistent, involving systems/humans) as a major contribution of our process model since it makes it possible to uniformly describe a wide range of interactions.

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