No, but it does search a lot of them. Still, it's good to know what databases aren't included because those databases may have content you need. Take a look at our list of databases not covered by library search for a list of databases you might be missing out on.
Alternately, you can see which databases are included in a search by checking the Database List and looking for the SLib icon 
beside the title of the database.
For example, the icons in the image below tell us that Academic OneFile is being searched when you search from the library website, but Mintel Reports is not.
This means that you can find Academic OneFile's content just by searching on the Seneca Library website, but you'll miss out on content from Mintel Reports. To see content from Mintel you would need to search within that database directly.
How do I know which database(s) I should use?
If you're looking for databases specific to your subject area, we suggest taking a look at our Subject Guides.