Semantic query optimization for methods in object-oriented database systems

Aberer, Karl; Fischer, Gisela

doi:10.1109/icde.1995.380406

Cited by 26 publications

(11 citation statements)

References 20 publications

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“…Other future extension will address the integration of the VODAK hypermedia engine with the SGML (ISO-8879 1992) database schema developed at our institute , the mapping to and integration of the linking architectural forms of the HyTime ISO standard (ISO/ IEC-10744 1992), and the tight integration of declarative VQL queries (Aberer and Fischer 1995) with the hypermedia engine.…”

Section: Discussionmentioning

confidence: 99%

Flexible Design and Efficient Implementation of a Hypermedia Document Database System by Tailoring Semantic Relationships

Wäsch

Aberer

1997

Database Applications Semantics

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In this paper we present the design concepts and data modeling approach that was used to define a general application framework for storing hypermedia documents in the object-oriented database management system VODAK. We exploit the capabilities of the VODAK data model to introduce new hypermedia modeling primitives at the meta level. We show that representing the hypermedia semantics within the DBMS in this way is clearly advantageous for efficiency of the design and implementation of hypermedia document storage engines. As an example, we give a concrete realization of a DBMS-based hypermedia engine for the SEPIA hypermedia authoring system developed at GMD-IPSI. With this example we show that the data model extensions provided are flexible enough to represent also complex semantic hypermedia concepts, that the development cycle of a hypermedia engine can become extremely fast and that the resulting implementation has adequate performance for interactive applications.

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Section: Discussionmentioning

confidence: 99%

Flexible Design and Efficient Implementation of a Hypermedia Document Database System by Tailoring Semantic Relationships

Wäsch

Aberer

1997

Database Applications Semantics

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“…The query entered in Fig. 10 This VQL expression is transferred to the server for optimization and execution (Aberer and Fischer 1995). It results in a set of titles and object identifiers (OIDs) that is returned to the client.…”

Section: Audio_insttype Is Derived From Simpleaudio_mentioning

confidence: 99%

Audio support for an object-oriented database-management system

Löhr

Rakow²

1995

Multimedia Systems

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Abstract. We describe the development of the data type audio in an object-oriented database management system (DBMS). The interface of the data type includes operations to store, retrieve, and manipulate audio data. Additionally, a transport protocol supports continuous recording and presentation at the users' workstations in a client-server environment. Design considerations are outlined and lead us to use no compression algorithms and to handle parametrized sample rates and sizes transparently for the user. Specific manipulation operations, such as low-pass filtering and dynamic compression, are described in detail. The implementation of an interactive audio tool shows that the data type audio can be used in the same way as conventional data types. We give an outlook on further built-in support of time-dependent media that a comprehensive multimedia DBMS should offer.

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“…On the other hand, attributes, to give an example, are elementtype-or document-type-speci c. Correspondingly, the schema consists of a document-type-independent layer, t h e document-type-speci c layer, and the Hy-Time layer as in Figure 8. 3 HyTime-related issues are part of the following section. Classes are represented by ellipses.…”

Section: Modeling Issuesmentioning

confidence: 99%

Administering structured documents in Digital Libraries

Böhm¹,

Aberer²,

Neuhold³

1995

Digital Libraries Current Issues

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In this chapter we argue that hyperdocuments administered by d i g ital libraries have to be structured according to standardized storage and exchange formats in order to allow for the manipulation functionality required in digital library construction, maintenance and use. We demonstrate how SGML and its extension, HyTime, can play this structuring role, and how m ultimedia documents structured accordingly can be stored, changed and maintained in the object-oriented database system VODAK. Using the dynamic semantic extension facilities of VODAK it is illustrated how the document structuring dynamics o ered by SGML and HyTime can be accommodated in the database. In addition we discuss how t h i s facility can be combined with other system components to provide a relevant portion of the functionality required for digital libraries.

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Semantic query optimization for methods in object-oriented database systems

Abstract: Abstract

Cited by 26 publications

References 20 publications

Flexible Design and Efficient Implementation of a Hypermedia Document Database System by Tailoring Semantic Relationships

Flexible Design and Efficient Implementation of a Hypermedia Document Database System by Tailoring Semantic Relationships

Audio support for an object-oriented database-management system

Administering structured documents in Digital Libraries

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