Databases are collections of references to journal articles from many journals, chapters in books, reviews, conference proceedings,reports & in some cases, dissertations & theses.
Online databases are most useful for finding articles when you do not know in which journals articles are published.
In many cases databases include the full text of articles.
ACMDL: Digital Library
Communication & Mass Media Complete
Current Contents: Social &Behavioral Sciences (SBS)
Elsevier Business, Management & Accounting Backfiles
Gale Business Insights: Global
Henry Stewart Talks: The Marketing & Management Collection (Talks / Seminars)
Hospitality & Tourism Complete
Inspec (incl. Supply chain ; Logistics)
Library, Information Science & Technology Abstracts
Library Literature & Information Science
LISA (Library & Information Science Abstracts)
ProQuest business collection / UMI Proquest.
RDS Business Suite: Business & Management Practices
WARC (World Advertising Research Center)