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Learn how to effectively search databases using keywords and create profiles for better search results. Understand database structure and utilize indexes and descriptors. Explore techniques for creating and combining sets of records.
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Basic Searching • Database Structure • Keywords and Profile Creation • Creating and Combining Sets
Records Indexes The Database FREE-TEXT Index Title Index Author Index Source Index Language Index Descriptors Index ……..
Term Record Number The FREE-TEXT Index • CATTINI-C 12, 35,57 • CATTINI-PA 8, 11 • CATTLE 1,2,5,7,8,11,14,17,21 • CATTLE-BREEDING 2,5,8,17 • CATTLE-BREEDS 2,5,11,20 • CATTLE-DISEASES 1,5,14,21 • CATTLE-FARMERS 7,12 • CATTLE-FARMING 7,11 • CATTLE-FARMS 7,14,20 • CATTLE-FEEDING 11,14,21 • CORN 6,9,13 • CORN-FLOUR 6,9 • DESAI-VG 22 • DESALINATION 4,16 • FLOUR 6,9
Keywords and Selection • Understand the question • Select all the important concepts • Add synonyms, singulars and plurals • Use the indexes and Thesaurus
Building the Profile • Search Example: • “I need 50 recent records on the irrigation of rice in South East Asia” • Keywords: • Irrigation • Rice • South East Asia
A Simple Search • #3 south east Asia 20072 • #2 rice 27332 • #1 irrigation 20972
Combining Sets • Boolean Operators: AND OR NOT
The Finished Search • The Combine Operation: • #1 AND #2 AND #3 • The Final Search: • #4 #1 and #2 and #3 197 • #3 south east asia 20072 • #2 rice 27332 • #1 irrigation 20972
After the Search • Display the records • Check the relevance • Look for additional search terms • Modify the search if required