Date post: | 19-Dec-2015 |
Category: |
Documents |
View: | 214 times |
Download: | 0 times |
Boolean Logic
Combining Searches in a Database
We’ll start out with a subject search on electronic commerce
This search needs to be narrowed. We need to add anothertopic. It’s not practical to skim so many citations. Plus withthis much information your paper/report wouldn’t have much focus
Too Many Records--Need to Narrow Search
Let’s add another topic to our research: the automobile industry.By itself this subject heading retrieves 17108 citations. What we’reultimately looking for is the use of electronic commerce in the automobile industry.
Add Topic Automobile industry
Combine Search Topic with a Specific Journal
Combining your search topic with articles from a particular journalis also a useful technique. You can restrict your search this way to journals that you know are in Feinberg Library. Try to figure out the field name that a database uses to indicate journal name. In this databaseit’s source.
You can see all these articles are from the journal HarvardBusiness Review
Search Restricted to One Journal
Two Topics in a Specific Journal
In this search we’re combining the topics hotels and motels withcost control. We use another AND to combine it with Cornell Hotel and Restaurant Administration Quarterly.
Search Results
You can see these articles include both our subjects and arein the journal we specified.
Lexis-Nexis Basics
• Lexis-Nexis is a full-text database• This database doesn’t use controlled vocabulary• This database doesn’t have keyword or subject
heading searching• If you search using the “basic search” your
search will search through the full text• If you’re not careful, you will retrieve too many
records
Guided Search in Lexis-Nexis
• This option allows you to search for you words in only the headline or headline and first paragraph
• This allows you to be more precise
• Guided search allows you to avoid searching through the full-text
Guided Search
You can restrict you search to Headline or Headline and Lead Paragraph. Also note date of publication or journal nameoptions.