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Answered By: Michelle Reyes Last Updated: Nov 20, 2018 Views: 28
By default, users are concurrently searching 238 databases that are activated in our WorldCat Discovery knowledge base. These 238 databases are being searched for WilmU's full text access options, but there are still more records to be found in the 34 databases you see listed in our Discovery Advanced Search. Add and subtract these databases as you see fit for your research.
The 238 databases in the WorldCat Discovery knowledge base are most of WilmU Library's subscribed databases such as EBSCOhost databases, Sage, Springer, etc., in addition to specific open access collections that we have activated (Directory of Open Access Journals, HathiTrust). Based on what we have activated in the WorldCat Discovery knowledge base, Discovery detects and displays the full text WilmU users are able to access and provides the View Full Text, View eBook, etc., links to the full text.
If Discovery is already searching our subscribed and/or open access 238 databases by default, what is the purpose of selecting any of the 34 databases listed in the Advanced Search?
By default, WorldCat Discovery is searching the giant index of WorldCat.org which contains 422,252,206 bibliographic records as of May 2018. This is a lot of records but not ALL of the records. There are records that are indexed by publishers (Sage, Wiley) and aggregators (EBSCO, ProQuest), and not all of these records will be included in the WorldCat.org index. In order to easily find these “hidden” records, users would have to select databases from Discovery Advanced Search. For example, the following article could not be found in Discovery without adding Academic Search Complete to the search: Schardt, D. (2013). How bittersweet it is. Nutrition Action Health Letter, 40(10).
The screenshot below shows a search for the article title with WorldCat.org and Academic Search Complete selected as Filters and results sorted by Best Match to find this article. It looks like the Academic Search Complete database indexed the individual articles for this journal, while WorldCat.org did not. It may seem logical to set the default Discovery search to include records for ALL of the 34 databases listed in Advanced Search, but unfortunately, this setting causes our Discovery system to display a warning to all of our users with every search that this search could take really long, and it does indeed take a very long time to search all of those indexes at once.