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1st IFCIS International Conference on Cooperative Information Systems, CoopIS 1996

作者： Perl, Yehoshua Geller, James Gu, Huanying Institute for Integrated Systems Department of Computer and Information Sciences Center for Manufacturing Systems New Jersey Institute of Technology NewarkNJ07102 United States

ISBN: (纸本)0818675055

Our work is motivated by the desire to develop methods to comprehend large vocabularies and large schemas of object-oriented databases. The ability of a user of a database participating in a federated system to retrieve information from the other database systems will be greatly enhanced by acquiring a better comprehension of these systems. The authors are trying to develop both a theoretical paradigm and a methodology to analyze existing large schemas. Their approach to achieve comprehension is based on combining two concepts: informational thinning (i.e. concentration on the specialization hierarchy of the schema) and partitioning. They present a new technique for modeling which is called disciplined modeling. Based on the rules of disciplined modeling we develop a theoretical paradigm to support the existence of a meaningful forest hierarchy within the specialization hierarchy. Such a hierarchy functions as a skeleton of the schema and supports comprehension and partitioning efforts. © 1996 IEEE.

关键词： object-oriented databases

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IO2 an algorithmic method for building inheritance graphs in object database design

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15th International Conference on Conceptual Modeling, ER 1996

作者： Yahia, A. Lakhal, L. Cicchetti, R. Bordat, J.P. LIMOS Complexe Scientifique des Cézeaux 63177 Aubière Cedex France Case 901 Faculté des sciences de Luminy 163 Av. de Luminy 13288 Marseille Cedex9 France LIRMM 161 rue ADA 34392 Montpellier cedex 5 France

ISBN: (纸本)9783540617846

This paper proposes a method, called iO2, for building the inheritance graph of an 02 database schema. The iO2 method is based on the Galois lattice data structure. It encompasses three steps: a (first) construction step, a (second) optimization step, and a (final) generation step. This paper focuses on the two first steps. The construction step builds the Galois graph of the finite binary relation associating properties to entity and relationship types. A new algorithm is proposed for this first step. The optimization step builds the Galois inheritance graph from the Galois graph. A new algorithm is proposed for this second step in order to eliminate the redundancies. The generation step yields the 02 inheritance graph from the Galois inheritance graph. The transformation principles underlying this third step are given. The detailed generation algorithm is presented in [Yah96a].

关键词： object-oriented databases

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Rodain: A real-time object-oriented database system for telecommunications 96

Rodain: A real-time object-oriented database system for tele...

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1996 Workshop on databases: Active and Real-Time, DART 1996

作者： Taina, Juha Raatikainen, Kimmo University of Helsinki Finland

ISBN: (纸本)0897919483

Future telecommunication services will extensively exploit database technology. The persistent and temporal information needed in operations and management of the telecommunication networks and services will be in databases. The current Intelligent Network (IN) Recommendations of ITU-T imply that real-time transaction processing capabilities should be provided. Telecommunications Management Network (TMN) and Telecommunications Information Networking Architecture (TINA) are object oriented. Current and future mobile telephone systems have their own requirements for database services. An ideal database system supporting various telecommunications applications should be a fault-tolerant distributed real-time object-oriented database system. In the research project Rodain the ultimate objective is to design and to specify a real-time object-oriented database architecture for telecommunications applications and to implement a prototype based on that architecture. The design and specification take place in 1996 while the prototype will be implemented in 1997. Copyright 1997 ACM.

关键词： object-oriented databases

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An active rule language for ROCK & ROLL 14th

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14th British National Conference on databases, BNCOD 1996

作者： Dinn, Andrew Paton, Norman W. Williams, M. Howard Fernandes, Alvaro A. A. Department of Computing and Electrical Engineering Heriot-Watt University Riccarton Edinburgh United Kingdom Department of Computer Science University of Manchester Oxford Road Manchester United Kingdom Department of Mathematical Sciences Goldsmiths College New Cross LondonSE14 6NW United Kingdom

ISBN: (纸本)9783540614425

This paper presents an active rule language for the ROCK & ROLL deductive object-oriented database system. A characteristic feature of ROCK & ROLL is that it blends imperative and deductive programming styles so that both can be used together in support of passive database applications. The aim in developing an active extension is to allow declarative expression of aspects of active behaviour wherever possible, without imposing prohibitive restrictions on the power of the resulting system. The proposal which results is more powerful than most earlier declarative active rule systems, in both its language and execution model, without resorting to the wholly procedural approach supported by most proposals for active object-oriented databases. The paper indicates where retaining declarative features yields greatest benefits, but also where difficulties are encountered which lead to compromises. © Springer-Verlag Berlin Heidelberg 1996.

关键词： object-oriented databases

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Conceptual design of active object-oriented database applications using multi-level diagrams 10th

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10th European Conference on object-oriented Programming, ECOOP 1996

作者： Silva, Mauricio J. V. Carlson, C. Robert Department of Computer Science Illinois Institute of Technology 10 West 31st Street ChicagoIL60616 United States

ISBN: (纸本)9783540614395

Several active object-oriented database systems have been developed to address the needs of applications with complex requirements and time execution constraints (e.g. computer integrated manufacturing). However, no comprehensive and integrated modeling approach has been described for conceptually modeling active object-oriented database applications. This paper deals with these issues by extending the research of object-oriented methods with an integrated approach, called A/OODBMT (Active object-oriented Database Modeling Technique), which integrates and extends the object Modeling Technique (OMT) method for conceptually designing active object-oriented database applications. A/OODBMT models database applications by defining and integrating four new types of models, namely the nested object model (NOM), the behavior model (BM), the nested rule model (NRM), and the nested event model (NEM). The nested object model extends the OMT object model by adding nesting capabilities, and by providing a better abstraction mechanism for developing database applications in multi-level diagrams. Moreover, the nested object model adds rules to classes to specify their active behavior. The behavior model combines the dynamic and the functional modeling techniques proposed in the OMT method. In addition, the behavioral model represents database transactions through transaction diagrams. The nested rule model supports a comprehensive set of rules and visually defines the rules and their interactions using multi-level diagrams. The nested event model supports a comprehensive set of events and visually represents them in the context of rules. © Springer-Verlag Berlin Heidelberg 1996.

关键词： object-oriented databases

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Towards an expressive language for PDE solvers 6th

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6th European Symposium on Programming Languages and Systems, ESOP 1996

作者： Thuné, Michael Åhlander, Krister Dept. of Scientific Computing Uppsala University P.O. Box 120 UppsalaS-751 04 Sweden

ISBN: (纸本)3540610553

Many significant real-life applications, e.g., air-craft design and environmental modelling, involve simulations based on the numerical solution of systems of time-dependent partial differential equations. In general, the computational domain has a complicated geometry, and the computations demand high-performance computers. The present paper lays a foundation for an expressive notation for this kind of application. By an object-oriented analysis concepts are identified, that can be combined flexibly enough to allow a programmer to express real computational problems (as opposed to model problems). The resulting concepts have been implemented as classes in C++. In a sense, this class library (referred to as Cogito/Solver) will specialize C++ into a language for the application domain under consideration. However, the aim is to use Cogito/Solver as a basis for higher-level interfaces. As a first attempt in this direction, an object-oriented database for Cogito/Solver objects has been implemented. Through an interface to this database, a programmer can compose an executable object (a Numerical Experiment), from various smaller objects, related to the different Cogito/Solver concepts. © Springer-Verlag Berlin Heidelberg 1996.

关键词： object-oriented databases

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Development of a FFPDES oriented heavy and complex parts of a machine-tool

Development of a FFPDES oriented heavy and complex parts of ...

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1996 IEEE International Conference on Systems, Man and Cybernetics - Information, Intelligence and Systems

作者： Li, WF Ni, DM Wuhan Transportation University Wuhan China

ISBN: (纸本)7800033813

Feature technique and expert system are two popular research fields in mechanical design and CAD. This paper elucidates how to adapt artificial intelligence and object-oriented thoughts to develop an information system of product design and CAD. For this purpose, it is analyzed how to build a feature library that can be called for functional modeling design of the parts and a knowledge base that is an object-oriented knowledge structure. To solve the difficulty of message linking in an object-oriented system or of frame linking in a frame system, it put forward a new method of object-oriented inheritable assembling so that the assembly of class architecture is as general, simple and flexible as that of part's sub-structures. FFPDES has been developed to design five kinds of heavy and complex parts of machine tools in some factory.

关键词： machine tools CAD/CAM expert systems deductive databases object-oriented databases FFPDES heavy parts complex parts machine-tool feature technique expert system mechanical design CAD artificial intelligence AI product design feature library knowledge base object-oriented knowledge structure message linking frame linking object-oriented inheritable assembling class architecture assembling

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Achieving interoperability between heterogeneous object-oriented genomic databases

Achieving interoperability between heterogeneous object-orie...

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： Dong-Guk Shin Gupta Ting Computer Science & Engin. University of Connecticut Storrs CT USA UES Inc. Dublin OH USA

We present a framework for making a specialized genome database interoperable with a public database. Specifically, we study how to grant users of the E. Coli genome database EcoSeq to access data remotely available from GenInfo. We extended the object Loader software tool developed by NCBI to translate ASN.1 instances to and from C++ data structures. In our prototype system, EcoSeq and GenInfo are stored in two heterogeneous object-oriented DBMS, Ontos and object/DB, respectively, each of which is designed to support persistency of C++ objects. The two databases run on different hardware platforms, one on a SUN SPARCstation and the other on a DEC workstation. Characteristics of the proposed framework are illustrated by using examples of the types of interoperation that are currently possible between the two databases. Further research issues related to enhancing the interoperation are identified.< >

关键词： Data structures Open Systems Interconnection Genetics Medical information systems Software tools object-oriented databases

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OPERATIONS AND QUERIES IN object-oriented databases SUPPORTING COMPLEX objectS

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INFORMATION AND SOFTWARE TECHNOLOGY 1993年第1期35卷 54-62页

作者： BHALLA, N BALASUNDARAM, S JAWAHARLAL NEHRU UNIV SCH COMP & SYST SCINEW MEHRAULI RDNEW DELHI 110067INDIA NCMRWF SUPER COMP CTR DEPT SCI & TECHNOLNEW DELHI 110003INDIA

In the paper, the authors attempt to extend the query model of ORION. The extension is based on adding two new features. First, is to extend relational algebra operations and set-theoretic operations to the world of classes. Second, to allow new classes to be created as a result of applying these operations on classes along the lines of relational databases. The extended query model allows a query against multiple target classes, i.e., a query that corresponds to relational join and set operations. It also enables the authors to retrieve complex objects and extracts attributes from component-type hierarchy equivalent to relational select and project operations respectively.

关键词： COMPLEX objectS COMPONENT-TYPE HIERARCHY COMPONENT-CLASS HIERARCHY object-oriented databases OPERATIONS ON COMPONENT-CLASS HIERARCHY QUERY PROCESSING

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ON USING PROLOG TO IMPLEMENT object-oriented databases

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INFORMATION AND SOFTWARE TECHNOLOGY 1993年第5期35卷 301-311页

作者： PATON, NW LEISHMAN, S EMBURY, SM GRAY, PMD UNIV ABERDEEN KINGS COLLDEPT COMP SCIABERDEEN AB9 2UBSCOTLAND

This Paper outlines the use of Prolog for implementing object-oriented databases (OODBs), to indicate both the benefits and costs associated with Prolog as an implementation platform. The different roles which Prolog can play in the implementation of an OODB are illustrated hy reference to example systems which, although they use Prolog as an implementation language, have significantly different architectures. These architectures are compared and assessed, both in terms of the functionality provided to users, and performance.

关键词： PROLOG object-oriented databases DATABASE PROGRAMMING

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