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Database Engineering and Applications Symposium, 2000 International

Date 18-20 Sept. 2000

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  • 2000 International Database Engineering and Applications Symposium [front matter]

    Publication Year: 2000, Page(s):0_1 - viii
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    Freely Available from IEEE
  • Business-to-business connectivity and emerging protocols for E-biz

    Publication Year: 2000, Page(s):3 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

    Summary form only given. For many years ED1 served as the dominant protocol for e-biz over private networks. Due to the rapid spread of the Internet, several new Business-to-Business (B2B) interaction protocols have become popular, e.g., Open Buying on the Internet (OBI), RosettaNet, and Vendor-defined protocols such as Ariba??s Punchout process. We will describe these protocols, with an emphasis ... View full abstract»

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  • Author index

    Publication Year: 2000, Page(s):447 - 448
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    Freely Available from IEEE
  • Plug and play with query algebras: SECONDO, a generic DBMS development environment

    Publication Year: 2000, Page(s):380 - 390
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (876 KB)

    Presents SECONDO, a new generic environment supporting the implementation of database systems for a wide range of data models and query languages. On the one hand, this framework is more flexible than common extensible and object-relational systems, offering the full extensibility of second-order signatures, which is the formal basis for data and query language definitions in SECONDO. On the other... View full abstract»

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  • Keeping Web pages up-to-date with SQL:1999

    Publication Year: 2000, Page(s):219 - 223
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    From the beginnings of the World Wide Web (WWW or Web) and the definition of the Common Gateway Interface (CGI), Web site administrators have used dynamically generated HTML pages to provide up-to-date information. Due to the high resource consumption of dynamic page generation approaches, many sites have switched over to periodical updates of frequently visited pages, e.g., a headline index of an... View full abstract»

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  • Materializing a set of views: dynamic strategies and performance evaluation

    Publication Year: 2000, Page(s):424 - 428
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    The present paper focuses on a view selection method exploiting a central construct called Multi View Materialization Graph (MVMG) which provides a framework to support materialized, virtual and hybrid fragments of views. Furthermore, our approach is dynamic, i.e. materialized fragments can become virtual and vice versa. In the same way, attributes may change their status according to their update... View full abstract»

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  • A study of MBR-based spatial access methods: how well they perform in high-dimensional spaces

    Publication Year: 2000, Page(s):306 - 315
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    Many spatial applications deal with data characterized by extremely high dimensionality. Unfortunately, other than the fact that contemporary spatial access methods (SAMs) are inadequate to handle large sets of high dimensional data, we know little about the underlying causes of their inadequacy. The paper investigates the performance of spatial access methods that approximate extended objects by ... View full abstract»

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  • A formal background to build constraint objects

    Publication Year: 2000, Page(s):7 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    Constraint databases exploit a fundamental duality: (i) a constraint (first-order formula) with free variables is interpreted as a set of database tuples that satisfy it; (ii) conversely, a database object can be viewed as a constraint. This enables us to use constraints as basic data types in the underlying DBMS and to enjoy the expressiveness of first-order logic and most of the advantages of co... View full abstract»

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  • Calculating worst-case execution times of transactions in databases for event-driven, hard real-time embedded systems

    Publication Year: 2000, Page(s):149 - 157
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    In embedded real-time systems the use of databases increases, particularly to ensure the quality of data and to simplify the development of software. Especially for safety-critical applications one must guarantee in advance by suitable verification-algorithms that all deadlines hold in all possible cases of use. The worst-case execution time of transactions is an essential input of those algorithm... View full abstract»

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  • A study on the interaction between interscheme property extraction and type conflict resolution

    Publication Year: 2000, Page(s):25 - 33
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    Studies the interaction between the extraction of heterogeneous database inter-scheme properties, such as synonymies, homonymies and type conflicts (which are exploited for defining the semantics of the involved schemes for integration purposes), and the resolution of type conflicts. As a matter of fact, the transformations required by type conflict resolution could invalidate some of the detected... View full abstract»

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  • Open active services for data-intensive distributed applications

    Publication Year: 2000, Page(s):349 - 359
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1096 KB)

    Applications are now highly distributed, heterogeneous and scalable. They comprise autonomous, loosely coupled components, some of them being database management systems, Web servers, etc. Considering such a framework, database technology has to evolve towards cooperation and integration. We propose open and distributed active services that can be used for specifying and generating event and rule ... View full abstract»

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  • An XML-based architecture for adaptive Web hypermedia systems using a probabilistic user model

    Publication Year: 2000, Page(s):257 - 265
    Cited by:  Papers (5)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    Web based hypermedia systems are becoming increasingly popular as tools for user driven access to information and services. The paper presents an architecture for the development of Web based adaptive hypermedia systems. The architecture uses weighted graphs of XML documents to describe the application domain and a probabilistic model to adapt the Web site content generation and presentation to th... View full abstract»

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  • Resiliency and robustness of alternative shape-based image retrieval techniques

    Publication Year: 2000, Page(s):337 - 345
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    The shape of an object is an important feature for image and multimedia similarity retrieval. However, as a consequence of uncertainty, shape representation techniques may sometimes work well only in certain environments, and their performance may depend crucially on the quality of the technique used to represent the shapes. In this study, we focus on shape-based object retrieval under various unc... View full abstract»

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  • How to reuse former queries to facilitate the formulation of new ones

    Publication Year: 2000, Page(s):92 - 100
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    Query formulation remains obstinately difficult for large classes of users. Indeed, in face of the growth in query complexity due to development of new kind of application manipulating great size of data, we notice the absence of models taking charge of the user through from specification of needs to formulation of queries. We think that users can be given effective help in query formulation by me... View full abstract»

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  • Speculation based nested locking protocol to increase the concurrency of nested transactions

    Publication Year: 2000, Page(s):296 - 305
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    The authors propose an improved concurrency control protocol based on speculation for nested transactions and explain how it increases both intraand inter-transaction concurrency as compared to J.E.B. Moss's (1985) nested locking protocol. In the proposed speculative nested locking (SNL) protocol, whenever a sub-transaction finishes work with a data object (produces after-image), it's parent inher... View full abstract»

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  • Metadata based Web mining for relevance

    Publication Year: 2000, Page(s):113 - 121
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    This paper presents a relevant term discoverer, a system that discovers relevant topics of a given topic from the World Wide Web. The system mines hyperlink metadata on the basis of the association of terms in the metadata. It also applies various filtering techniques to detect false positives and false negatives. The applications of the system include: i) topic-specific information gathering syst... View full abstract»

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  • Efficient maintenance of temporal data warehouses

    Publication Year: 2000, Page(s):188 - 196
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    A temporal data warehouse can be defined as a set V of materialized views over non-temporal sources. We present a self-maintainable temporal data warehouse that, besides a set of temporal views V, has two kinds of auxiliary views: a set T of auxiliary relations containing only temporal information necessary to maintain the data warehouse and a set C of complements allowing the warehouse maintenanc... View full abstract»

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  • XML functionally

    Publication Year: 2000, Page(s):266 - 274
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    The topic of the XML language is one of the most discussed in the IS/IT community today. The primary goal of XML is to provide marking text components and use such data for exchange among information sources. The goal of the paper is to present a database view on XML data. We formulate a type system powerful enough to describe XML data in a set- and function-oriented manner. A version of a typed &... View full abstract»

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  • The vagabond temporal OID index: an index structure for OID indexing in temporal object database systems

    Publication Year: 2000, Page(s):158 - 166
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    In an object database system using logical OIDs, an OID index (OIDX) is necessary to map from logical OID to the physical location of an object. In a temporal object database system (TODB), this OIDX also contains the timestamps of the object versions. OIDX maintenance can be very costly, and can easy become the bottleneck of such a system. The main reason for this, is that in a TODB the OIDX need... View full abstract»

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  • Supporting data migration between relational and object-oriented databases using a federation approach

    Publication Year: 2000, Page(s):371 - 379
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    Data migration between relational and object-oriented database systems is useful whenever relational data is needed in new object-oriented environments. However, implementing migration programs, i.e. converting and loading legacy data into the new database system, is cumbersome and must be done for each pair of databases manually. This paper presents a flexible approach to support data exchange us... View full abstract»

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  • Fuzzy and presentation algebras for web and multimedia data

    Publication Year: 2000, Page(s):134 - 142
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Web and multimedia data are becoming very important. A fundamental characteristic of these data is imprecision. Query languages for web and multimedia data must express imprecision in features matching, similarity queries and user preferences. In addition specific operators need to be introduced to organize the answers in a user friendly style. The aim of this work is to provide a formal framework... View full abstract»

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  • The hybrid technique for reference materialization in object query processing

    Publication Year: 2000, Page(s):37 - 46
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    Resolving object references, or reference materialization, is a fundamental operation in object query evaluation. Existing reference materialization techniques fall into two categories: pointer-based and value-based. We identify several drawbacks of existing techniques and propose a hybrid technique that combines the advantages of each category. This technique relaxes the limitations of value-base... View full abstract»

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  • Path query reduction and diffusion for distributed semi-structured data retrieval

    Publication Year: 2000, Page(s):393 - 397
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    Addresses the problem of query processing on distributed semi-structured data. The distributed semi-structured data can be modeled as a rooted and edge-labeled graph, where nodes are located in a single or a number of sites. For efficient retrieval of distributed semi-structured data, we propose a query processing model that is based on the `query reduction and diffusion' method. In the method, a ... View full abstract»

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  • StreamJoin: a generic database approach to support the class of stream-oriented applications

    Publication Year: 2000, Page(s):83 - 91
    Cited by:  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    Today many applications routinely generate large quantities of data. The data often takes the form of (time) series, or more generally streams, i.e. an ordered sequence of records. Analysis of this data requires stream processing techniques which differ in significant ways from what current database analysis and query techniques have been optimized for. In this paper we present a new operator, cal... View full abstract»

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  • KhojYantra: an integrated MetaSearch engine with classification, clustering and ranking

    Publication Year: 2000, Page(s):122 - 133
    Cited by:  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    Conventional search engines generally return a long ordered list of results which the users are forced to sift for getting relevant documents. It is envisaged that the search results can be greatly improved by integrating techniques, like ranking, classification and clustering. This paper explores how these three techniques can be integrated into search engine technology to achieve this goal. We i... View full abstract»

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