Comparison between the databases

Science Direct and BioOne are both databases that provides good amount of information about different areas in science, but they differs in some points. Science direct provides you with more than one way to search for your topic. you can search, by the first letter of the topic (alphabetically), by the name of the author or by the subject that your topic falls into. It provides also two ways to search, quick search and advanced search. It covers information from different sources books, journals..., and it covers the full text of some sources. the database provides sources from 2500 journal and 6000 books and that enables you to get many results and sources for the topic you search for. the database also classifies the topics by subject in a very organized way that gives you chance to find your goal easily. when I searched on global climate change and greenhouse gases, I recieved a lot of sources (19 volume that each of them contains approximately 20 articles) that approximately all of them have the full text

BioOne provides search using the author's name, the date, the type, the title... when I searched on global warming, I recieved 3898 results. I think most of them are scholary. The database covers sources from 1920 to 2009. It provides full text for most of the essays. Although I think that search on Science Direct is easier, but the information provided on BioOne are more relevant to the topic I searched on.