Basic
Research in the Virtual Library:
for ENGL 101
and ENGL 201/301
Contents: |
Important! If you want to search for information on the "people, customs, and economy of Russia," the following search is incorrect and will produce bizarre results: russia and people or customs or economy The system would first find material about Russia AND people. Then it would OR "customs" (that is, include every item about customs -- not just Russia's) and would OR "economy" (that is, include every item about economy -- not just Russia's). The final results set would not be about the people, customs, and economy of Russia. The items retrieved would be about the people of Russia, or about customs anywhere, or about economy anywhere.
Solve the problem by performing each of the following steps in the South Dakota Library Network Library Catalog. 1. In SDLN, return to the screen that says "Please select Library and Resource from the options below." That is:
2. To see the problem firsthand,
Note the number of items found. 3. Now do the search correctly by splitting the search into two parts in which the OR'ed terms are connected first, and then combined with the AND'ed term. To do this, try the following procedure in the Library Catalog of Dakota State.
people or customs or economy
russia
You should have retrieved many fewer items in this search which has correctly combined the concept of "russia" with the concepts of "people," "customs," or "economy." 4. How would you do a search for "bones" or "skeletons" that are not "human?" (Don't forget to use truncation where appropriate) ...... Answer 5. Here's the tricky question. What if you want to find information about the people and customs of both Russia and the Ukraine? To do this search you would need to AND together the two concepts of "people OR customs" and "russia OR ukraine." However, if you used the method you learned above, you would effectively be doing the search: people OR customs AND russia OR ukraine This would produce incorrect results because the concept of "people or customs" would be ANDed to russia. Then the OR before ukraine would cause every item about the ukraine to also be retrieved (whether it had to do with "people or customs" or not). There are two solutions:
|
Return to Mundt Library
homepage.
Return to DSU homepage
Page 10
"Module 3" in Basic Research in the Virtual
Library for ENGL 101.
authored by Risė L. Smith, Public Services Librarian
& Associate Professor, Karl E.Mundt Library, Dakota State
University.
May 1999
Last Updated 09/20/00
Send email to smithr@columbia.dsu.edu