See these Canvas modules on the databases, UpToDate and Cochrane Library. The module on UpToDate covers adding the app to your mobile device. Both modules cover searching these databases - take a look at them today!
This video shows a search in the database, CINAHL Complete, which was recently updated to CINALH Ultimate. All that means is that you have more access to full-text article. There is no difference in how the database is searched.