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1.
Esperanza Marcos Belén Vela JoséMaría Cavero 《Informatik - Forschung und Entwicklung》2004,2(1):152-164
The most common way of designing databases is by means of a conceptual model, such as E/R, without taking into account other views of the system. New object-oriented design languages, such as UML (Unified Modelling Language), allow the whole system, including the database schema, to be modelled in a uniform way. Moreover, as UML is an extendable language, it allows for any necessary introduction of new stereotypes for specific applications. Proposals exist to extend UML with stereotypes for database design but, unfortunately, they are focused on relational databases. However, new applications require complex objects to be represented in complex relationships, object-relational databases being more appropriate for these requirements. The framework of this paper is an Object-Relational Database Design Methodology, which defines new UML stereotypes for Object-Relational Database Design and proposes some guidelines to translate a UML conceptual schema into an object-relational schema. The guidelines are based on the SQL: 1999 object-relational model and on Oracle8i as a product example. 相似文献
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Esperanza Marcos Belén Vela und José María Cavero 《Informatik - Forschung und Entwicklung》2004,18(3-4):152-164
The most common way of designing databases is by means of a conceptual model, such as E/R, without taking into account other views of the system. New object-oriented design languages, such as UML (Unified Modelling Language), allow the whole system, including the database schema, to be modelled in a uniform way. Moreover, as UML is an extendable language, it allows for any necessary introduction of new stereotypes for specific applications. Proposals exist to extend UML with stereotypes for database design but, unfortunately, they are focused on relational databases. However, new applications require complex objects to be represented in complex relationships, object-relational databases being more appropriate for these requirements. The framework of this paper is an Object-Relational Database Design Methodology, which defines new UML stereotypes for Object-Relational Database Design and proposes some guidelines to translate a UML conceptual schema into an object-relational schema. The guidelines are based on the SQL: 1999 object-relational model and on Oracle8i as a product example.Received: 22 January 2002, Revised: 10 June 2002, This paper is a revised and extended version of Extending UML for Object-Relational Database Design, presented in the UML2001 conference [17]. 相似文献
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Matt Vassar Branden Carr Melissa Kash-Holley Elizabeth DeWitt Chelsea Koller Joshua Day Kimberly Day David Herrmann Matt Holzmann 《Journal of the Medical Library Association》2015,103(4):189-192
Objective
The choice of bibliographic database during the systematic review search process has been an ongoing conversation among information specialists. With newer information sources, such as Google Scholar and clinical trials registries, we were interested in which databases were utilized by information specialists and systematic review researchers.Method
We retrieved 144 systematic reviews and meta-analyses from 4 clinical endocrinology journals and extracted all information sources used during the search processes.Results
Findings indicate that traditional bibliographic databases are most often used, followed by regional databases, clinical trials registries, and gray literature databases.Conclusions
This study informs information specialists about additional resources that may be considered during the search process. 相似文献4.
《Medical reference services quarterly》2013,32(2):19-34
Pro-CiteTM, a database management system specifically designed to manage bibliographic references, is reviewed in this article. One of three bibliographic products from Personal Bibliographic Software, Pro-Cite provides a wide range of data manipulation capabilities. These include: creating, editing, and deleting database records; querying for specific recordss; organizing databases; and printing selected records to a variety of devices. This article describes Pro-Cite version 2.0., a major upgrade, and its companion program for converting data captured from MEDLARS into Pro-Cite databases, MEDLARS Biblio-LinksTM. 相似文献
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This paper describes the goals, tasks, and main areas of bibliographic control over documents that enter the databases of the Institute of Scientific Information on Social Sciences (INION). It analyzes the features of how bibliographic records of publications on social sciences and humanities (scientific, abstract-analytical, information, scientific-methodical, reference and bibliographic records) are formed. The functions of the software technological complex for automated analysis of the names of persons who are responsible for various types of publications are disclosed. The paper considers the potential of modern software and technological tools for bibliographic analysis and control of bibliographic records, references and citations, including bibliographic managers, scientific work organizers, knowledge managers, and personal information managers. 相似文献
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国内高校图书馆古籍书目数据库建设述评 总被引：1，自引：0，他引：1
以国内高校图书馆中文古籍书目数据库建设现状为基础,从古籍书目详编数据内容、特点、宗旨及建设主体四个方面进行调查分析,继续探求科学的古籍书目著录原则与方法,展望古籍书目数据库的发展方向。 相似文献
8.
Sable JH Carlin BG Andrews JE Sievert MC 《Bulletin of the Medical Library Association》2000,88(2):139-144
The Internet has created new opportunities for librarians to present literature search results to clinicians. In order to take full advantage of these opportunities, libraries need to create locally maintained bibliographic databases. A simple method of creating a local bibliographic database and publishing it on the Web is described. The method uses off-the-shelf software and requires minimal programming. A hedge search strategy for outcome studies of clinical process interventions is created, and Ovid is used to search MEDLINE. The search results are saved and imported into EndNote libraries. The citations are modified, exported to a Microsoft Access database, and published on the Web. Clinicians can use a Web browser to search the database. The bibliographic database contains 13,803 MEDLINE citations of outcome studies. Most searches take between four and ten seconds and retrieve between ten and 100 citations. The entire cost of the software is under $900. Locally maintained bibliographic databases can be created easily and inexpensively. They significantly extend the evidence-based health care services that libraries can offer to clinicians. 相似文献
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从分析当前书目数据库的特征入手，依次对题名、主题、分类号等项目的数据质量和标引特征进行分析，得出在现有的书目数据质量情况下，几乎没有一条提高查全率和查准率的综合性检索途径的结论。针对现状，指出提高书目数据库检索效果和检索精度的必要性，并对如何提高检索质量的问题进行研究，研究内容包括检索语言兼容性和检索方法的扩展性，并为提高书目数据检索的综合质量、增加书目检索系统的开放性探索提供方案。 相似文献
11.
Andrea Powell 《Learned Publishing》2002,15(4):267-272
For a secondary database publisher, the imperative to provide seamless links between the bibliographic citations and the corresponding full text is unequivocal. Online publishing should, in theory, make this linkage easier to facilitate, but the reality is far more complex than the theory! CABI Publishing has been endeavouring continually to improve the linkage to full text offered by its bibliographic databases, and has encountered some obstacles which may not be immediately apparent to primary publishers. This article explains some of those obstacles and provides some insight into how secondary publishers are attempting to respond to the demands of the marketplace and the potential of online publishing. 相似文献
12.
《期刊图书馆员》2013,64(1-2):261-265
Summary Librarians now have the capability, using a personal computer, to integrate bibliographic data, collection-use data, and even data from ILL requests into a customized serials database for the purpose of conducting automated use studies and qualitative collection analysis. This workshop builds upon a previous NASIG workshop and offers further ideas and enhancements for libraries creating customized databases. A general discussion of the issues and techniques related to building a customized serials database is presented, along with costs, benefits, and future considerations. 相似文献
13.
介绍当前国外数字图书馆资源的主要类型,包括全文资源、二次文献和书目信息、多媒体资源及网页、网关等,具体介绍各类资料的种类;分析各类型资源的特点;重点论述数字图书馆各类型资源在国外的发展现状。 相似文献
14.
Olga L’vovna Lavrik Tatyana Busygina Valentina Rykova 《Slavic & East European Information Resources》2013,14(1-2):13-21
The article presents the evolution of the bibliographic resources created by Gosudarstvennaia publichnaia nauchno-tekhnicheskaia biblioteka Sibirskogo otdeleniia Rossiiskoi akademii nauk (GPNTB SO RAN) [State Public Scientific-Technological Library of the Siberian Branch of the Russian Academy of Sciences] to provide information support to researchers of SO RAN. The components of these resources are described briefly: bibliographic databases, databases of abstracts, full-text thematic databases, and problem-specific databases. Also discussed are ways to improve these library information products. 相似文献
15.
The morning report reference file was automated at the Stollerman Library because the manual system was time-intensive to maintain and cumbersome to search. A general database management system (DBMS) was chosen so that it could be used in the future for other data management functions in the library. DBMS features that should be examined before use with a bibliographic application include size limitations, data entry forms, data types, search options, index files, sort options, report generation, query and programming languages, command and/or menu files, file interaction, interface with other software, and documentation. Desired requirements for this application are discussed. It is noted that a general database manager probably will not meet all of the desired requirements. For some bibliographic applications, software specifically designed for bibliographic information management and retrieval should be used. A database for the purposes of searching the morning report reference file and producing a weekly reference list and a yearly index was developed using CONDOR 3. The structure of the database is described, and examples of the reports are given. The system has been in operation since December 1984 and has been well-received by staff and patrons. 相似文献
16.
To date, there is no unique accepted and standardized method for identifying journal articles, authors, and other elements of bibliographic metadata, although in recent years a considerable number of identifiers have been developed. The problem of identification becomes particularly urgent when the same information is used in different scientometric and bibliographic databases, when it is necessary to carry out complex data processing with their further integration. The need for unique identifiers outside of a system is a universal requirement. Initiatives to construct identifiers and systems appear regularly in the scientific press; however, they have not achieved the necessary degree of interoperability. This paper presents the general problems that are associated with metadata identifiers of scientific publications, analyzes a number of the existing systems and technologies, and indicates the current initiatives to remove the gap in the area of identification. 相似文献
17.
Access to scholarly information in the disciplines of education and medicine occurred primarily through the simultaneous development of two bibliographic databases. The Education Resource Information Center (ERIC) originated as a resource designed to be comprehensive in its inclusion of peer-reviewed and unpublished literature for the entire education community. MEDLINE began as a resource of selective materials for physicians and researchers. Today, ERIC includes selected peer-reviewed literature directed primarily to researchers and practitioners, although others use the database, while MEDLINE is a vast information system serving all health professionals and consumers. This literature analysis of their policy history shows important differences in their evolution. Application of the Multiple Streams Framework can help in formulating possible explanations for the different developmental paths. These paths include: the degree of centralization or decentralization of the information system's organizational structure; the stability of the organizational mission; and the success of assessment strategies, federal budgetary support, and bias toward science in federal policy-making. These two government-supported databases served as models for a plethora of other databases. However, one was successful in acquiring funding from the outset, while the other continually suffered deficiencies in support. The importance of each to public welfare should have been obvious, but was not. 相似文献
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Jessica Bates Paul Best Janice McQuilkin Brian Taylor 《The Journal of Academic Librarianship》2017,43(1):8-17
The availability of web search engines offers opportunities in addition to those provided by bibliographic databases for identifying academic literature, but their usefulness for retrieving research is uncertain. A rigorous literature search was undertaken to investigate whether web search engines might replace bibliographic databases, using empirical research in health and social care as a case study. Eight databases and five web search engines were searched between 20 July and 6 August 2015. Sixteen unique studies which compared at least one database with at least one web search engine were examined, as well as drawing lessons from the authors’ own search process. Web search engines were limited in that the searcher cannot be certain that the principles of Boolean logic apply and they were more limited than bibliographic databases in their functions, such as exporting abstracts. Recommendations are made for improving the rigour and quality of reporting studies of academic literature searching. 相似文献
20.
针对韩文书目数据库建设中的机读目录格式、数据源、著录规则、编目软件、操作系统与字符集、书目数据库的检索等问题进行探讨。并结合山东大学威海分校图书馆韩文书目数据库建设的实践，给出具体的韩文图书书目数据格式示例。 相似文献