searching secondary databases
TRANSCRIPT
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Searching Secondary Databases: Basic Steps
Samuel KingLibrary and learning Resources
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What is a “secondary database”?
It is a database used to “locate” other resources where you can find required information.
Example: Medline is a database where you can find lists of periodical articles on topics related to healthcare.
REMEMBER: you can only “cite” the actual article and the journal it appears in. You can NOT cite the secondary database. It is only a resource for locating the article.
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STEP 1 = ? STEP 2 = ?
STEP 3 = ?STEP 4 = ?
BASIC SEARCH STEPS
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STEP 1 = ?
BASIC SEARCH STEPS
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SEARCH
BASIC SEARCH STEPS
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Subject Searching – Why?Many secondary databases have
“subject headings”. Why search by “subject heading” rather than “text word”?
Subject headings are more effective because they enable you to search a topic without having to remember all possible synonyms an author might have used for that concept.
Ultimately, one should master both “text word” and “subject” searching.
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Subject Searching – Why?
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Subject Searching - Examples
Subject searching - provide a structured language for you to use when searching for specific topics in the literature.
Examples:
1. MedlineMedical Subject Headings (MeSH)Developed at The National Library of Medicine
2. CINAHL CINAHL subject headings
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SEARCH STEP 2 = ?
BASIC SEARCH STEPS
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SEARCH COMBINE
BASIC SEARCH STEPS
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Boolean Operators
Combine search results using:
AND
OR
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When do you use …
AND
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AND MEANS “TOGETHER”
A B
AND A AND B
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AND
All terms connected with AND must appear in each citation retrieved.
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When do you use…
OR
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OR Means “Either”
A B
OR A or B
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OR
If two or more terms are joined by OR, at least one of the terms must appear in each result.
NOTE: All the terms do not have to appear.
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SEARCH COMBINE
STEP 3 = ?
BASIC SEARCH STEPS
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SEARCH COMBINE
LIMIT
BASIC SEARCH STEPS
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Limit your combined results…
By language, year of publication, human, age, etc.
Using the database “Limit” command.
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SEARCH COMBINE
LIMIT STEP 4 = ?
BASIC SEARCH STEPS
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SEARCH COMBINE
LIMITDISPLAY/PRINT RESULTS
BASIC SEARCH STEPS
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Display and Print…Select the citations to be displayed.Choose the “citation and abstract”
version to print.Print your selected results (include the
search strategy in OVID).
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SEARCH COMBINE
LIMITDISPLAY/PRINT RESULTS
BASIC SEARCH STEPS
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Reference QuestionYou have a patient who has asthma and
need literature on the following topics:
1. The use of antibiotics to treat asthma
2. The use of steroids to treat asthma
The following presentations demonstrate this search using the Medline and CINAHL databases.