Question

I have designed this table and wanted to find out if it is 3NF, I would assume it is since all the non-primary key frelds are not transitively dependent on primary key, but wanted your thoughts, if i am missing something
Patient_Id : ID (PK)
Patient_name : Name
Patient_DOB : Date
Patient_Gender: GenderType
Patient_address : Address

Answer 1

It looks fine, except the Patient_address column, which should be stored in a different table. Here is an example:

Patients(ID, FirstName, LastName, DateOfBirth, MainAddressId);
Addresses(Id, Street, Number, ..., PatientId);

This way, each patient can have more than one address, while you can still set an address as the main address (in the MainAddressId).