The main problem of today's anaesthesia department is that it spans a multiplicity of locations for data management dealing with data on the pre-OP, intra-OP, and post-OP situation as well as with data obtained fr...
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The main problem of today's anaesthesia department is that it spans a multiplicity of locations for data management dealing with data on the pre-OP, intra-OP, and post-OP situation as well as with data obtained from the laboratories, the administration, etc. In the operating room itself, numerous monitoring devices and anaesthesia machines have to be integrated into the anaesthesia documentation process. Therefore, computerized anaesthesia documentation as a part of quality control urgently needs sufficient support for handling both medical and administrative data, taking into account that the user usually is not a computer expert. We will describe an approach to solve the problem discussed applying object-oriented technology in medical data management, and a sequence of technical realization steps to bring this technology into clinical use.
It is a challenge to support advanced applications involving multiple users in a distributed computing environment that consists of heterogeneous and autonomous resources. A distributed cooperative task in which multi...
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It is a challenge to support advanced applications involving multiple users in a distributed computing environment that consists of heterogeneous and autonomous resources. A distributed cooperative task in which multiple agents cooperate to achieve application objectives offers flexible and reliable support. Controlling interactions among the cooperating agents is a critical issue in such a paradigm. The ITX (interactive transaction) system supports complex interactions among cooperating agents in the presence Of user interventions that change application objectives and system failures. ITX supports reliable operations on shared objects (representing cooperative objectives, shared data structures, and resources) that are stored in heterogeneous and autonomous component systems. A novel application-independent criterion called fixed point defines a stable system state with respect to an agent. Agents achieve a fixed point and the application-dependent cooperative objective by using a feedback control strategy that involves iterative execution of ITXs. These ITXs consist of atomic transactions that manipulate the shared objects. The authors use a multimedia teleconferencing service to illustrate the important features and advantages of the ITX system.
User-role based security, URBS, is a technique for characterizing database security that takes the responsibilities of individuals into consideration when determining the security requirements of an application. In pr...
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An earlier paper by Jajodia and Kogan [5] introduced an approach for building multilevel secure object-oriented database systems based on a secure message filtering mechanism. Under this approach each object has a uni...
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The object Flow Model (OFM) has been developed as a conceptual modeling language (CML) for object-driven (i.e. datadriven, object-oriented) applications. The model includes an object-oriented database that provides bo...
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For distributed computing environments, required for computer integrated manufacturing and other engineering applications, it is most important to support the sharing and exchange of complex objects among cooperating ...
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ISBN:
(纸本)0818637706
For distributed computing environments, required for computer integrated manufacturing and other engineering applications, it is most important to support the sharing and exchange of complex objects among cooperating sites, while preserving their autonomy. Specification of complex objects and their object boundaries in a federated database is described in this paper. Each database, as well as the entire federation, is modeled as a collection of related objects. Complex objects are defined as subgraphs of the entire objectbase and are specified by a root object, and a collection of paths. A complex object can be distributed over several sites. A method is described to ensure referential integrity while maintaining the autonomy of each database. Different linearization techniques of complex objects are supported to enable applications to retrieve complex objects as single entities. This model is implemented in PEER, a federated, object-oriented database system developed for engineering applications.
作者：
Soutou, C.URACOM
9 Avenue de 1'Europe Ramonville31527 France
This paper proposes a methodology for developing a federated database system. This principle permits one to use several conjoined databases without defining any global schema. The bottom-up approach is based on the ho...
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To access distant information from an interoperable multi object-oriented database (IM-OODB), a user needs to construct retrieval path-methods through one or several OODB schemas. The path-method generator (PMG) syste...
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We present a language Noodle in which to specify declarative queries in an object-oriented database system. The language models object-identity, classes, relations, views, inheritance, complex objects, and methods, in...
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