I am working on a medical patient management system web application. I am thinking I should use the user credentials of the logged in user to access the various tables i have with the respective patient information I have stored in various tables. I was wondering what is the best practice for which value that represents the logged in user should i use to create relationships with the tables where the patients health records are stored. For example, I have a table for medications, patient visits, and documents the patient has signed. If I can reiterate, what is the best practice for creating a relationship between the logged in user and the tables that store this particular users health information? Thank You !!!!