| Query specification |
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| ˘ | Old: originated
from command line interfaces |
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| l | Suit the system,
not the user |
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| e.g. “FIND TW Mt
St. Helens AND DATE 1981” |
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| ˘ | Then: translated
for users on OPACs |
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| l | Subject: |
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| l | Date: 1980 – 1985 1986-1990 |
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| ˘ | Now: graphical
means for query specification |
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