Search (1651 results, page 1 of 83)

  • × year_i:[1990 TO 2000}
  1. Maurer, H.; Scherbakov, N.; Halim, Z.; Razak, Z.: From databases to hypermedia : with 26 CAI lessons (1998) 0.11 
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    RSWK
    Relationales Datenmodell
    Hypermedia / Datenmodell (21)
    Subject
    Relationales Datenmodell
    Hypermedia / Datenmodell (21)
  2. Staud, J.L.: Datenbanken entwerfen mit dem ER-Modell (1995) 0.10 
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    Abstract
    Datenbanken aufbauen - eine Aufgabe, der wir uns immer wieder gegenüber sehen, und sei es auch nur, um bestehende Datenbanken an die Veränderungen der dynamischen Welt anzupassen. Der erste Schritt beim Datenbankaufbau ist die Erstellung eines Datenmodells, genauer: eines konzeptionellen Datenmodells. Dieses stellt ein Abbild des zu betrachtenden Anwendungsbereichs dar (des Weltausschnitts) und wird mit einem Instrumentarium erstellt, das einerseits möglichst viel von den Strukturen, Abläufen, Regeln, usw. des Weltaussschnits erfaßt und das andererseits in ein 'physisches Modell' umgesetzt werden kann. Neben dem Relationalen Datenmodell ist der am meisten verbreitete Ansatz zur Modellierung von Weltausschnitten für Datenbanken der Entity- Relationship Ansatz. Die mit ihm erstellten Modelle werden ER-Modelle genannt. Einführung und Beispiele
  3. Bostian, R.; Robbins, A.: Effective instruction for searching CD-ROM indexes (1990) 0.06 
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    Abstract
    Describes an experiment that examined the relationship between successful searching of CD-ROM databases by undergraduate students and various types of instruction provided by the library staff. The findings indicate that the only level of instruction that resulted in a significant difference was a live demonstration of searches.
    Date
    21. 3.2008 13:22:03
  4. Kaiser, A.: Zeitbezogene Datenbanksysteme : eine Bestandsaufnahme und ausgewählte Problemstellungen (1996) 0.06 
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    Abstract
    Der vorliegende Beitrag spezifiziert die Anforderungen, die an zeitbezogene Datenbanksysteme gestellt werden. Ausgehend von diesen Anforderungen wird untersucht, inwieweit diese mit dem relationalen Datenmodell und Standard-SQL (SQL2) zu erfüllen sind. Daran anschließend werden ein temporal erweitertes Datenmodell (BCDM) und die darauf basierende Datenbanksprache TSQL2 vorgestellt. Nach einem Vergleich der beiden Sprachen SQL2 udn TSQL2 anhand eines Beispiels wird abschließend auf einige Problemgebiete bei zeitbezogenen Datenbanksystemen näher eingegangen
  5. Callahan, P.F.: ISBD(S) revised edition and AACR2 1988 revision : a comparison (1992) 0.05 
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    Abstract
    Article appearing as part of an issue devoted to the theme, Serials Cataloguing: Modern Perspectives and International Developments. Pt.2. In 1988, a revision of AACR2 and a revised edition of the ISBD for serials were published. Discusses and compares the origins of theses 2 standards and their relationship. Describes the inconsistencies between the 2 texts and evaluates their compatibility. Concludes that there is a high degree of compatability on major points but that relatively little progress has been made since the original editions in reducing the substantial number of minor differences
    Source
    Serials librarian. 22(1992) no.3/4, S.249-262
  6. Bovey, J.D.: Event-based personal retrieval (1996) 0.05 
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    Abstract
    People who work in a research, academic or business environemtn often have personal information collections which are large enough to need retrieval aids. A major difference between personal information retrieval and standard information retrieval is that the items to be retrieved are often associated with events in the searcher's life and ca be retrieved by their relationship of other events as well as by content. Describes the background to evenet based retrieval and describes a prototype graphical event based retrieval system, developed at Kent University, UK, employing the hive event browser
    Source
    Journal of information science. 22(1996) no.5, S.357-366
  7. Boeder, R.: Database applications for libraries : an introduction (1996) 0.05 
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    Abstract
    Overviews database applications in libraries. Explains the 2 basic types of databases, flat-file and relational, outlines the uses and advantages of relationship systems. Librarians can utilise a number of software packages for database management and design a database in cooperation with a programmer. The librarian needs to be involved in the conceptual and external level of database design. Offers advice on finding a database designer. Outlines ideas for library related applications of database software
    Source
    Colorado libraries. 22(1996) no.1, S.25-28
  8. André, A.-S.: ¬L'¬information culturelle : acteurs, usages et enjeux pour les professionels de l'information (1997) 0.05 
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    Abstract
    A summary of a thesis based on the supposition that in an era of increasing leisure more time is to be available for cultural activities and that analysis can lead to a better grasp of the concept of cultural information. Discusses: the relationship of government, cultural networks and the cultural engineering sector to information; existing kinds of cultural information, their use and the impact on them of new technologies; and the characteristics and role of information professionals in this sector
    Date
    1. 8.1996 22:01:00
  9. Regimbeau, G.: Acces thématiques aux oeuvres d'art contemporaines dans les banques de données (1998) 0.05 
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    Abstract
    Discusses the possibilities and difficulties encountered when using a thematic index to search contemporary art databanks. Jaconde and Videomuseum, 2 French databanks, are used as examples. the core problems found in the study are the methods and limits of indexing in both systems. A thematic index should be developed that is better adapted to 20th century art, based on the complementary and reciprocal relationship between text and image, and which fully exploits hypertext
    Date
    1. 8.1996 22:01:00
  10. Hillmann, D.I.: "Parallel universes" or meaningful relationships : envisioning a future for the OPAC and the net (1996) 0.05 
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    Abstract
    Over the past year, innumerable discussions on the relationship between traditional library OPACs and the newly burgeoning World WideWeb have occured in many libraries and in virtually every library related discussion list. Rumors and speculation abound, some insisting that SGML will replace USMARC "soon," others maintaining that OPACs that haven't migrated to the Web will go the way of the dinosaurs.
    Source
    Cataloging and classification quarterly. 22(1996) nos.3/4, S.97-103
  11. Hillmann, D.I.: 'Parallel universes' or meaningful relationships : envisioning a future for the OPAC and the net (1996) 0.04 
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    Abstract
    Briefly follows the debate concerning: the relationship between traditional library OPACs and the WWW; possible replacement of USMARC format with SGML; and the possible demise of OPACs that do not migrate to the WWW. Discusses the approach taken by the Text encoding Initative (TEI) in their use of a mandatory TEI header in their standard SGML application as the first since CIP to explore attaching bibliographic information to the item itself to assist cataloguing
    Series
    Cataloging and classification quarterly; vol.22, nos.3/4
  12. Crook, M.: Barbara Tillett discusses cataloging rules and conceptual models (1996) 0.04 
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    Abstract
    The chief of cataloguing policy and support office at the LoC presents her views on the usefulness of conceptual modelling in determining future directions for cataloguing and the MARC format. After describing the evolution of bibliographic processes, suggests usign the entity-relationship conceptual model to step back from how we record information today and start thinking about what information really means and why we provide it. Argues that now is the time to reexamine the basic principles which underpin Anglo-American cataloguing codes and that MARC formats should be looked at to see how they can evolve towards a future, improved structure for communicating bibliographic and authority information
    Source
    OCLC newsletter. 1996, no.220, S.20-22
  13. Takahashi, K.; Liang, E.: Analysis and design of Web-based information systems (1997) 0.04 
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    Abstract
    Develops a method for analysis and design of web-based information systems (WBIs), and tools to support the method. WebArchitect and PilotBoat. Aims to effiently develop WBIs that best support particular business processes at least maintenance cost. It consists of 2 approaches: static and dynamic. Uses the entity relation (E-R) approach for the static aspects of WBIs and uses scenario approaches for the dynamic aspects. The E-R analysis and design, based on relationship management methodology (RMM) defines what are entities and how they are related. Applies the approaches the the WWW6 proceedings site
    Date
    1. 8.1996 22:08:06
  14. Chen, R.: ¬The eighth stage of information management : information resources management (IRM) vs. knowledge management (KM), and the Chief Information Officer (CIO) vs. the Chief Knowledge Officer (CKO) (1998) 0.04 
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    Abstract
    IRM is a major management reform that deals with information as an organizational resource that is planned, managed and controlled in ways similar to other resources, such as human resources. Describes the characteristics of IRM and its relationship with Knowledge Management (KM). Describes also the characteristics of IRM and KM and their influence on its executives: the Chief Knowledge Officers; and compares them with the old ones: IRM and Chief Information Officers
    Date
    30. 1.1999 18:28:22
  15. Li, W.-S.; Shim, J.: Facilitating complex Web queries through visual user interfaces and query relaxation (1998) 0.04 
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    Abstract
    Describes a novel visual user interface, WebIFQ (Web-In-Frame-Query), to assist users in specifying queries and visualising query criteria including document metadata, strucutres, and linkage information. WebIFQ automatically generates corresponding query statements for WebDB. As a result, users are not required to be aware of underlying complex schema design and language syntax. WebDB supports automated query relaxation to include additional terms related by semantic or co-occurence relationship. WebIFQ can facilitate users to reformulate queries perpetually in an interactive mode
    Date
    1. 8.1996 22:08:06
  16. Prätor, K.: Integration von Hypertext und Expertensystemen (1990) 0.04 
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    Abstract
    Der Beitrag versucht eine Bestimmung der Charakteristika von Hypertext- und Expertensystemen, unter dem Aspekt ihrer wechselseitigen funktionellen Ergänzung. Er stellt an ausgewählten kommerziellen Systemen unterschiedliche Konzepte der Kopplung und Integration vor. Als Desiderat sowohl für die Entwicklung wie die Anwendung der Verbindung beider Systemtypen erweist sich ein übergreifendes datenmodell. Hier wird gegenüber den vorherrschenden an der VonNeumann-Programmierung orientierten Ansätzen für ein relationales Konzept plädiert
  17. Czap, H.: Informationsverarbeitung bei Homonymie und Synonymie der Unternehmensdaten (1992) 0.04 
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    Abstract
    Der Prozeß einer Erfassung und Modellierung von Informationsbedürfnissen in Wirtschaftsunternehmen oder Verwaltungen gestaltet sich nach derzeitigem Verständnis in sequentiell abzuarbeitenden Phasen. Danach sind zunächst die Anforderungen an ein Informationssystem festzustellen, aus dem sich die unternehmensweit benötigten Informationskategorien ableiten, das sog. Datenmodell. Dieses besteht aus einer Klassifizierung real interessierender betrieblicher Objekte und ihrer Beziehungen
  18. Meier, A.: Relationale Datenbanken : eine Einführung für die Praxis (1995) 0.04 
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    Abstract
    Gibt eine umfassende Einführung in das Gebiet der relationalen Datenbanken. Es ist das erste deutschsprachige Werk, das sich auf die relationale Datenbanktechnologie beschränkt und zugleich die Datenbankentwurfsmethodik, Sprachaspekte, Systemarchitekturen und neuere Technologien umfassend und für den Praktiker verständlich behandelt. Bei der Datenmodellierung werden Abbildungsregeln zum Überführen eines Entitäten-Beziehungsmodells in ein relationales Datenbankschema behandelt, Normalformen diskutiert und ein unternehmensweites Datenmodell veranschaulicht. Die Diskussion relationaler Abfrage- und Manipulationssprachen geht grundlegend auf die Relationenalgebra ein, erläutert den Begriff relational vollständiger Sprachen und gibt einen Überblick über die bedeutenden Sprachen SQL, QUEL und QBE
  19. Augsburger, W.; Rieder, H.K.; Schwab, J.: Wissensbasiertes, inhaltsorientiertes Retrieval statistischer Daten mit EISREVU (1991) 0.04 
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    Abstract
    Derzeit verfügbare statistische Retrievalsysteme haben eine Architektur nach dem Paradigma der traditionellen Programmierung: der Trennung von Daten und Programmen. Diese Systemarchitektur stößt bei den Anforderungen an ein intelligentes Informationssystem an ihre systemimmanenten Grenzen. Um diese zu überwinden, wird eine neue Systemarchitektur, basierend auf einem objektorientierten Datenmodell, vorgeschlagen. Diese hebt die klassische Trennung zwischen numerischen Daten und Programmen auf. Die Darstellung des Modellansatzes erfolgt dabei am Beispiel der Zeitreihenanalyse
  20. Meier, A.: Relationale Datenbanken : eine Einführung für die Praxis (1997) 0.04 
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    Abstract
    Gibt eine umfassende Einführung in das Gebiet der relationalen Datenbanken. Es ist das erste deutschsprachige Werk, das sich auf die relationale Datenbanktechnologie beschränkt und zugleich die Datenbankentwurfsmethodik, Sprachaspekte, Systemarchitekturen und neuere Technologien umfassend und für den Praktiker verständlich behandelt. Bei der Datenmodellierung werden Abbildungsregeln zum Überführen eines Entitäten-Beziehungsmodells in ein relationales Datenbankschema behandelt, Normalformen diskutiert und ein unternehmensweites Datenmodell veranschaulicht. Die Diskussion relationaler Abfrage- und Manipulationssprachen geht grundlegend auf die Relationenalgebra ein, erläutert den Begriff relational vollständiger Sprachen und gibt einen Überblick über die bedeutenden Sprachen SQL, QUEL und QBE

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