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หน่วยที่ 1 การสืบค้นข้อมูล
หน่วยที่ 1 การสืบค้นข้อมูล
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หน่วยที่ 1 การสืบค้นข้อมูล

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หน่วยที่ 1 การสืบค้นข้อมูล

  1. 1. .2 Website : www.krusuu.netE-mail : akaradej.po@gmail.com Telephone : 089-9426692
  2. 2. }
  3. 3. }}}}}
  4. 4. } 5 15} 10} webblog 20} 15} 20} 20
  5. 5. } 80 4} 75 79 3.5} 70 74 3} 65 69 2.5} 60 64 2} 55 59 1.5} 50 54 1} 50 0
  6. 6. }} 60 % .} webblog
  7. 7. 1. 2. 1
  8. 8. } – – –
  9. 9. } – – – (Boolean logic) – (Truncation) – (Nesting) Search engines
  10. 10. } (Logic operators) AND, OR, NOT NOT OR AND
  11. 11. } : AND} :} : AND
  12. 12. } : OR} :} : OR
  13. 13. } : NOT} :} : NOT
  14. 14. } (Wildcard) *#?!$} child* child children childhood childish
  15. 15. } wom#n
  16. 16. } (television or mass media and children)
  17. 17. } 3 Keyword search engine – Spider Robot Database
  18. 18. Meta Search engine– Database Search engie
  19. 19. Subject directory–
  20. 20. }1.2. (Bookmark)3. /4.
  21. 21. } 3. 4.2. 5.1. 3 5 6.

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