Search our Databases
Databases may look
different from each other, but most of them share
similar features. Being able to understand these
similar features will help you move from one database to
the next with more ease.
Before you start
using a database …
Make sure you:
Develop a Search Strategy
How to organize your search strategy:
Searching
Search Results
How to
Manage your Results
Search Tips
Before you start
using a database …
Take some time to
learn how a database works and try different searches
Read the screens carefully Consult
individual help screens Electronic databases
may have either abstracts, full-text articles or
citations.
Make sure you:
Select the
right database – what areas does the database cover? Find out what it
covers and
its types of
publications – does it cover journals, conference
proceedings, books, etc.? Check what
range of
publication dates it covers – Is it current and
how far back does it go?
Develop a Search Strategy Make
sure your topic is precise; don’t start with a
common word like “advertising” which will give you
thousands of results. Try to use at least two words
unless you are searching for something very rare like
“tsunami”. If you “need information about the impact
of advertising or media on adolescents or young people”
the key concepts to concentrate on would be: e.g. “advertising”
or “media” on “adolescents” or “young people”.
Here are different modes of searching, which give
different results: Basic searching – often
functions as a keyword search. A basic search usually
gives a large number of results, some of which may be
irrelevant. Advanced searching – usually
offers multiple fields to enter your terms. If a lot of
limitations are entered, this might give very limited
results. You might specify Boolean operators between
field searches for better search results.
Keyword
searching – often searches across all fields or the
full text document and it results in a large number of
search results. Subject searching
– usually
differs from database to database as the “language” or
controlled vocabulary of subject headings in every index
varies from one database to the next. Check the
database’s thesaurus to identify the correct
subject term.
A number of databases have
advance search as their default and others go into
simpler search modes. As the advance search gives more
search options, it is recommended that you use this mode
for your searching.
What Descriptors /
Related Subjects are given and how are they used?
Descriptors are the index terms assigned by the database
to describe the content of a document. By identifying
these descriptors and using them in your searches, it
can help you get more precise results. Each database
uses its own set of descriptors. Because these
descriptors are not always so obvious, you can use the
following ways to identify relevant descriptors in
databases:
- Browse through the results records
Once you find a record which is relevant to your
topic, check the related subjects or descriptors used to
describe an item. These give you a broader selection of
terms you can use in your searches.
- Search the
database’s thesaurus Each database usually gives a
thesaurus with preferred related subjects /descriptors,
which are used to describe their content. Thesauri may
be arranged from broader to more general subjects at the
top, from narrower to more specific subjects, etc.
Search results may vary. You may get: -
Too
many, which means you have to modify your search by
using only a specific field, adding date, full-text or
peer-reviewed limitations, etc. -
Too few, in
which case you change your search to other terminology
- No records, then you check your spelling or
fields you are searching. - Irrelevant results,
then try new search terms with related concepts, or use
subjects/descriptors from the database or
use a
different database.
Results lists Once a
search is done, your results will appear in:
-
full-text or abstract – if the database you are using is
in full text or abstracts - citations with items that
match your search
Once you have the record, you
click on the item’s title to see the results and decide
if you need the item. Remember that not all databases
have the same features.
Databases usually allow you to: -
mark or
select the records you want to search so that you
can later print, e-mail or
save them in
your account In all cases, check for the
“Marked
records” or “Mark list”, the “print button”
or the “email button” where you can send or
export your results. Include a note to make it easier to
find it later on.
Use advanced search features to modify your
search and get better results. These usually include:
- phrase or proximity searching - field searching
- date - document and / or publication type -
Boolean operators - Plurals and truncation
Make sure that when you search an electronic database
you leave out articles, prepositions, and
abstract or general terms – these tend to confuse
the database search engine. For example, if the paper
is on “The impact of alcohol on driving” use the most
precise terms like “alcohol” and “driving” and leave out
impact, the, of, on.
Use advanced search features
to modify a search to obtain more successful search
results. Remember, that normally a
good search
results in approximately 50 to 75 records. Advanced
searching methods may be combined to modify and improve
your search.
Phrase or proximity searching
Some databases automatically search for your terms as a
phrase within the same proximity rather than searching
each separately. In others though, you can specify by
using “ ” or by using the letter
w e.g.
“higher education” higher
w education
Field searching Terms can be searched through
the use of the pull-down list to specify a field
e.g. Jefkins Choose a Field Keyword (KEY) Title
(TI) Subject (SU) Author (AU) Make sure
that your search terms are in the same format used by
the database’s field, i.e. if you limit your search by
descriptors, you should not use terms that are not
descriptors or if you search for an author by using his
first name first and then his last name make sure the
database works in the same way otherwise you will not
find anything.
Date Databases offer
the possibility of a search specified by years or dates.
These are entered either in a field search for
publication date/year, using pull-down lists to select
dates, or typing dates into a date/year entry box.
Results, in some databases, may be listed in reverse
chronological order –most recent items at the top of the
results or you may specify the sort order yourself.
Publication type Database searches allow
you to limit searches to specific types of documents or
publications, i.e. - peer reviewed or refereed
publications - editorials, reviews, etc. -
newspapers, magazines, videos, books, etc.
Some
databases allow you to limit items to those available as
full text. These limits may be check boxes or pull down
lists.
Boolean operators Most databases
allow Boolean operators, AND, OR and NOT, to be used
between search terms to modify a search. Enter these in
capitals, or they will be treated as stop words and be
ignored. - AND is used to narrow a search. It
looks for both terms in the same record. e.g.
computers and children
- OR is used to
broaden a search. It looks for either term in the same
record and this expands or adds to your search. e.g.
computers or technology
- NOT
excludes material from a search. It is used to eliminate records
with a certain term. NOT must be used with caution as it
can eliminate results e.g. psychology not counseling
- Parentheses group multiple terms and Boolean
phrases e.g. (cats OR kittens) AND (dogs OR puppies)
Truncation / Wildcards Databases may use
different symbols to truncate different search terms or
to replace characters. These symbols may vary from
database to database. The most common ones are:
Unlimited *
Any number of characters at the end of a word or in the
middle
e.g. laugh* retrieves laugh, laughs, laughter, etc.
col*r retrieves color OR colour One character ?
e.g. te?t retrieves test OR text
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