PRISM - Derived Search Keys

Definition 

• Derived Search Keys are combinations of letters and punctuation that you construct to search PRISM records.
  • Example:
    • Title Search key for Gone with the Wind: gon,wi,th,w
• The Derived Keys are created by taking letters from:
  • personal names
  • corporate author names
  • titles
  • the combination of names and titles.
• In a Derived Key search, a word is considered any combination of characters (letters, numbers, punctuation, etc) between two spaces.
• Each Derived Key has a unique pattern and punctuation that identifies the specific type of Derived Key search to the PRISM system.
  • Example:
    • Title Search key format: 3 ltrs,2 ltrs,2 ltrs,1 ltr
      • Gone with the Wind: gon,wi,th,w

Entering Derived Keys 

• Derived Keys are typed in at the Home Position, the initial space of the top, blank line.
• Then hit the <control> <c> keys.

Specific rules for creating Derived Key search statements

• Include:
  • Letters
  • Numbers
  • These symbols: & $ % @ £
• Exclude:
  • Punctuation
  • Diacritics
  • These symbols: - # / + = ±
  • Initial articles (a, an, the, and comparable ones in foreign languages) but include these articles within titles.

Special cases in using Stop Words

• What are normally Stop Words in Keyword searches can be used in Derived Keys under certain conditions.
• Derived Search Statements can also be used with Commands.
  • Example: fin dt gon,wi,th,w (dt = derived title)

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