Indexing In Database
نویسنده
چکیده
Databases can store large amounts of data. each stored entity is a complex structure, called a record. Records are indexed based on the values of certain fields. A techniques for indexing data is provide.a method for compressed an index to obtain a compressed index that is easily stored and transmitted. The invention also provides for the decompression of such a compressed index. The main aim of this paper is to provide to the different techniques of indexing in database. Keyboards:types of indexing , techniques and methods.
منابع مشابه
میزان انطباق الزامات ساختاری مجلات علوم پزشکی کشور ایران با معیارهای نمایه‌سازی اسکوپوس
Background and Aim: In the recent years the number of science research health journals has increased in Iran. These journals should be based on the standards and criteria required in international indexing database. The aim of this study was to determine the adaptation rate of structural requirements on the Iranian medical journals with the criteria of indexing based on Scopus indexing database...
متن کاملوضعیت بازیابی اطلاعات در دو پایگاه نمایه و نما و سنجش اثربخشی استفاده از واژگان کنترل شده در نمایه‌سازی این دو پایگاه
Purpose: This study was carried out to determine the level of precision, recall, and searching time for “Nama” and “Namayeh” databases, as well as to find out which of the indexing tools (thesaurus and Dewey decimal classification) helps us more in improvement of information retrieval. Methodology: This study is an analytical survey in which the necessary data was collected by direct observati...
متن کاملمیزان همخوانی کلیدواژه‌های مستخرج از چکیده با توصیفگرهای نمایه‌سازان در پایگاه «چکیده پایان‌نامه‌های ایران»
Purpose: This research is devoted to study the consistency between keywords extracted from abstracts of theses by the experts in the related fields and descriptors provided by the indexers in database of “Iran’s theses abstracts”. Methodology: This research is an applied study based on content analysis. A checklist which consisted of 32 criteria was used. In addition, we consulted the experts ...
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متن کاملمدل دو مرحله ای شکاف- گلچین برای نمایه سازی خودکار متون فارسی
Purpose: Each language has its own problems. This leads to consider appropriate models for automatic indexing of every language. These models should concern the exhaustificity and specificity of indexing. This paper aims at introduction and evaluation of a model which is suited for Persian automatic indexing. This model suggests to break the text into the particles of candidate terms and to c...
متن کاملبررسی وضعیت نمایه شدن مجلات لاتین مصوب علوم پزشکی کشور در نمایهنامه های معتبر جهانی
Background and Aim: Today journals are one of the main platforms to exchange information between researchers. This study aimed to assess the status of Approved Latin indexing journals in the field of medical science citation indexes Web of Science and Scopus databases. Materials and Methods: This study was a cross-sectional descriptive survey. Statistical population of the study was 83 titles ...
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تاریخ انتشار 2013