I am developing a web application. It is a multitenant(SAAS) application.
My application involves getting signed certificates from users. Obviously each certificate would be having a separate CSR and Private Keys.
I need to retain all those things for further processing. I know that I can save those details in a table in my database and later use it.
But I am not sure whether it is a good way of storing certificates and keys.

Is there any ideal way to store certificates rather than a table?