It depends on the the database, but most do have an option to Permalink. See our Linking guide for how to do this on various vendor platforms https://guides.library.txstate.edu/linking
In all EBSCO databases we subscribe to, which includes Start Your Research, link to a search or specific resource by copying the url in the browser as shown here.
Linking to the article is compliant with copyright as opposed to uploading a copy of the pdf into Canvas. Faculty working to link content in Canvas may also want to start with Reading List: http://guides.library.txstate.edu/linking/Reading-List