Define 'tracker'. Whether or not you want them combined is entirely a company choice. I tend to recommend a combined database.
For example, one could have a database which tracks all corrective actions, customer complaints and potentially other information. The main aspect would be that there be an effective set of filters to be able to extract appropriate reports.
As an example re: databases
This forum runs on a single database because it is small enough to do so. Take a look at all the different things it tracks - Threads, individual posts, user names, passwords, 'media' items, post attachments, etc. The many different pages you see and their content are nothing more than 'reports' from that single database.
If you are a very big company, you may actually want a number of smaller distributed databases, but the concept is the same. It is the filters/reports which are the important factor.
Whether you use database(s) or use paper, or one or more spreadsheets is entirely up to you.