Your choice of database or information resource will depend on:
Time available, what resources you have access to, the type of information you require, what you need the information for, your area of expertise.
However, it is expected that more than one database is searched. Usually, you would search Medline (Ebsco/OVID), PubMed and Embase as the minimum. Depending on your topic or area of interest, other databases would be expected to be searched.
Information is published in a variety of sources including:
Remember! Resources can consist of different types of information:
Some sources such as PubMed, Embase, Web of Science will provide access to a wide range of information types
While others such as Cochrane Database of Systematic Reviews, Trials registers, NICE (UK) provide access to a specific type of information.
"Grey literature is usually understood to mean literature that is not formally published in sources such as books or journal articles" (Lefebvre et al. 2011, section 22.214.171.124)
Dissertations and Theses
Science, Technology, Humanities
Hand searching is searching through medical journals or conference abstract proceedings for reports of research which are not indexed in the major electronic databases like MEDLINE and Embase. It can also involve searching forward reference and screening the bibliography of selected studies.
National Health Library & Knowledge Service. Health Service Executive. Dr. Steevens' Hospital, Dublin 8. Tel: 01-6352555/8. Email: firstname.lastname@example.org