Use Controlled Vocabulary Searching when:
Here's a quick guide to constructing a database search.
Topic: What are the effects of caffeine on respiration rate and pulse rate after exercise?
1. Identify the key concepts (caffeine, respiration rate, pulse rate, exercise)
2. Group these according to concept.
Concept one = caffine
Concept two = respiration rate or pulse rate
Concept three - exercise
Use quotation marks around words you want to search as a phrase, e.g. "respiration rate".
Use truncation symbols to retrieve all possible endings on a word. Most databases use the asterisk (*) as a truncation symbol, e.g. exercis* with retrieve exercise, exercises, exercising, etc.
Be prepared to search more than one database. Always revise your search strategy to comply with individual database requirements.