an introduction to reference databases avialable in "hot bot" search engine
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An Introduction to Relational Databases
As explained in Chapter 1, the emphasis in this book is heavily on relational systems. In particular, Part II covers the theoretical foundations of such systems—that is, the relational model—in considerable depth. The purpose of the present chapter is to give a preliminary, intuitive, and very informal introduction to the material to be addressed in Part II (and to some extent in subsequent par...
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متن کاملThe freshness of web search engine databases
This study measures the frequency in which search engines update their indices. Therefore, 38 websites that are updated on a daily basis were analysed within a time-span of six weeks. The analysed search engines were Google, Yahoo and MSN. We find that Google performs best overall with the most pages updated on a daily basis, but only MSN is able to update all pages within a time-span of less t...
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Search engines and retrieval systems are popular tools at a life science desktop. The manual inspection of hundreds of database entries, that reflect a life science concept or fact, is a time intensive daily work. Hereby, not the number of query results matters, but the relevance does. In this paper, we present the LAILAPS search engine for life science databases. The concept is to combine a no...
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عنوان ژورنال:
مطالعات ملی کتابداری و سازماندهی اطلاعاتجلد ۱۴، شماره ۱، صفحات ۱۰۹-۱۲۰
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