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Proceedings of the 1997 International Database Engineering and Applications Symposium (Cat. No.97TB100166)

25-27 Aug. 1997

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  • Proceedings Ideas'97 International Database Engineering And Applications Symposium

    Publication Year: 1997, Page(s):iii - vii
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    Freely Available from IEEE
  • Proceedings of the 1997 International Database Engineering and Applications Symposium (Cat. No.97TB100166)

    Publication Year: 1997
    Request permission for commercial reuse | PDF file iconPDF (1221 KB)
    Freely Available from IEEE
  • Schema evolution in object databases by catalogs

    Publication Year: 1997, Page(s):368 - 376
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (866 KB)

    We are concerned with schema evolution in object oriented databases (OODB) that is processed by a modification of the classes of the schema. We present a new categorization of the different modifications in three categories: primitive, composite and complex modifications. On this basis, we propose a method by decomposition for addressing conceptual schema evolution: "real-life" complex schema modi... View full abstract»

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  • Author index

    Publication Year: 1997, Page(s): 403
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    Freely Available from IEEE
  • A formal specification strategy for electronic commerce

    Publication Year: 1997, Page(s):201 - 210
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    Most current Web applications perform operations that are basically read-only (retrieval of data/documents), so conflicts between transactions do not arise. However as Web applications increasingly become more sophisticated, permitting both concurrent data retrieval and update operations to remote databases, the potentials for conflicts between transactions becomes very high. Therefore, we must en... View full abstract»

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  • Evolving databases: an application to electronic commerce

    Publication Year: 1997, Page(s):191 - 200
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1084 KB)

    Many complex and dynamic database applications such as product modeling and negotiation monitoring require a number of features that have been adopted in semantic models and databases such as active rules, constraints, inheritance, etc. Unfortunately, each feature has largely been considered in isolation. Furthermore, in a commercial negotiation, participants staking their financial well beings wi... View full abstract»

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  • OFEM: an approach towards detection and reduction of objectives inconsistencies

    Publication Year: 1997, Page(s):250 - 259
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    The importance of improving understanding and communication between users and system developers in order to develop a structured description of the business, its information system needs and objectives through enterprise modelling approaches, has been increasingly recognized. Many enterprise modelling schemas are yielded to represent the different dimensions of the enterprise and different user vi... View full abstract»

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  • Detection of access control flaws in a distributed database system with local site autonomy

    Publication Year: 1997, Page(s):85 - 93
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    We address the authorization of access privileges to users in a local database management system (DBMS) that is interoperating in a distributed database system (DDBMS). Our focus is on the potential in a next generation security system for delegation access concepts such as role hierarchy delegation to violate the security policy in a local database system that is part of the distributed system. T... View full abstract»

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  • Advanced database functions for distance education system: VIEW Classroom

    Publication Year: 1997, Page(s):231 - 239
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    We have been developing an important application of distributed systems: a distance education system called VIEW Classroom. Conventional distance education systems use video images of teachers and selected students when required. From its initial stages, this system has taken a non-video base (although video function can be utilized) and tried to use database technology extensively in order to ass... View full abstract»

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  • Interfacing online bibliographic databases with Z39.50

    Publication Year: 1997, Page(s):379 - 387
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    Many online databases are available on the Internet, each one with its own access procedures and a special user interface and query language. The Z39.50 protocol standard offers a solution to this situation of diversity and lacking interoperability. However the majority of online databases do not yet support Z39.50. We describe a system that interfaces online bibliographic databases with Z39.50 cl... View full abstract»

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  • Query processing in the ROL system

    Publication Year: 1997, Page(s):327 - 336
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (868 KB)

    The ROL system is a novel deductive object-oriented database system that has been implemented at the University of Regina. It provides a uniform rule-based declarative language for defining, manipulating and querying databases, which integrates important features of deductive databases and object-oriented databases. It supports object identity, complex objects, classes, class hierarchies, multiple... View full abstract»

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  • Database system support for multidimensional data analysis in environmental epidemiology

    Publication Year: 1997, Page(s):180 - 188
    Cited by:  Papers (1)  |  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (944 KB)

    The project CARLOS (Cancer Registry Lower-Saxony) aims at novel techniques for analysing cancer clusters using advanced database technology to support multidimensional analysis of spatio-temporal related health data. This requires very advanced support capabilities which can not be provided by existing technology. Therefore, new approaches in the fields of spatio-temporal, multidimensional and sta... View full abstract»

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  • Database support for conflict detection in a computer-supported cooperative work environment

    Publication Year: 1997, Page(s):240 - 249
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1040 KB)

    Computer supported cooperative work (CSCW) requires the simultaneous consideration of a huge diversity of issues regarding a given object under design. Successful support for CSCW requires a conceptually integrated environment that can address this diversity of issues and assist with the detection and resolution of conflicts among design constraints and decisions. The Automated Constraint Refineme... View full abstract»

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  • An extended inverted file approach for information retrieval

    Publication Year: 1997, Page(s):397 - 402
    Cited by:  Papers (2)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    In information retrieval, the way in which the correspondence procedure works is highly important for the performance of the underlying system as a whole. An inverted file ensures quick access to the information items because the index alone is examined, rather than the actual file of items, in order to determine the items which satisfy a search request. This technique was a prominent feature of t... View full abstract»

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  • Alternative correctness criteria for multiversion concurrency control and a locking protocol via freezing

    Publication Year: 1997, Page(s):73 - 81
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (756 KB)

    Concurrency control protocols based on multiversions have been used in some commercial transaction processing systems in order to provide the serializable executions of transactions. In the existing protocols, transactions are allowed to read only the most recent version of each data item in order to ensure the correct execution of transactions. However this feature is not desirable in some advanc... View full abstract»

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  • Dynamic object recomposition for active information system on mobile environment

    Publication Year: 1997, Page(s):220 - 228
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (884 KB)

    Location-dependent information service requires an ability to change both the information and functions provided to the mobile client according to user location and time of access. The paper describes a framework for location dependent information service, called the mobile object model. In the mobile object model, a service consists of objects that contain both information and functions. These ob... View full abstract»

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  • An extension of SQL to support ordered domains in relational databases

    Publication Year: 1997, Page(s):358 - 367
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (892 KB)

    The ordered relational model is an extension of the relational model which incorporates partial orderings into data domains. We demonstrate that the ordered relational model is suitable for modelling advanced applications involving tree-structured information, incomplete information and temporal information. We describe OSQL, which is an extension of SQL for the ordered relational model, and show ... View full abstract»

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  • A fast transformation method to semantic query optimisation

    Publication Year: 1997, Page(s):319 - 326
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    Semantic query optimisation is a comparatively recent approach for the transformation of a given query into equivalent alternative queries using matching rules in order to select an optimum query based on the costs of executing these alternative queries. The most important aspect of this optimisation approach is that this resultant query can be processed more efficiently than the original query. T... View full abstract»

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  • Accommodating logical logging under fuzzy checkpointing in main memory databases

    Publication Year: 1997, Page(s):53 - 62
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (820 KB)

    This paper presents a simple and effective method to reduce the size of log data for recovery in main memory databases. Fuzzy checkpointing is known to be very efficient in main memory databases due to asynchronous backup activities. By this feature, most recovery works in the past have used only physical logging schemes. Since the size of physical log records is quite large, physical logging sche... View full abstract»

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  • A visual query interface for a customisable schema visualisation system

    Publication Year: 1997, Page(s):23 - 32
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1008 KB)

    Resolving different levels of heterogeneity present in heterogeneous database environments is a subject that has been addressed in a number of research projects. Graphical user interfaces are becoming the de-facto form of user interface in many application areas, including database management systems. The use of a popular visualisation notation to present schemas at an abstract level and to permit... View full abstract»

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  • Sequence comparison using a relational database approach

    Publication Year: 1997, Page(s):126 - 131
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    A variety of heterogenous data sources is available in the field of molecular biology. The authors focus lies on the biological sequence data, i.e. data maintained in collections like EMBL or SWISS-PROT. They propose a relational model based on an entity-relationship approach for this discourse world. This is the foundation of a flexible architecture useful for a variety of purposes, e.g. for sequ... View full abstract»

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  • Bottom-up scientific databases based on sets and their top-down usage

    Publication Year: 1997, Page(s):171 - 179
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    The paper proposes a data model for a scientific database. Scientific applications require the DBMS support of the discovery process. Unstructured or semi-structured scientific data is required for storage in databases, and manipulation as structured data. To meet these requirements, the proposed data model has the following features. It is based on the concept of sets in order that a database has... View full abstract»

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  • On the application of parallel database technology for large scale document management systems

    Publication Year: 1997, Page(s):388 - 396
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    Modern document management systems administer an increasing amount of data. Unfortunately traditional database technology cannot satisfy the resulting performance requirements. We report on how parallel database technology can contribute to make large and scalable document management systems work. Our discussion clearly shows that simply substituting a sequential database system for a parallel one... View full abstract»

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  • A Web-based animator for validating object specifications

    Publication Year: 1997, Page(s):211 - 219
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB)

    One of the central tasks in developing information systems is the specification of desired system properties. We use the object specification language TROLL light to formalize the conceptual model of a system. A TROLL light specification describes structural as well as dynamic characteristics of objects representing real world entities. For validating specifications, we have developed an animation... View full abstract»

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  • Modeling a faster data warehouse

    Publication Year: 1997, Page(s):260 - 265
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    One key area involved in implementing the data warehouse is the transfer of information from the Source Databases (SDBs) into the data warehouse and making it available to the user. In looking at the overall intent of the data warehouse as a repository for vast amounts of diverse information, changes made to the SDBs, can be critical to the correctness of the query responses provided by the wareho... View full abstract»

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