Should I show database-generated IDs to the user?

1. Is user ID public?
2. Are user IDs sensitive?
3. What is id in database?

Is user ID public?

On their own, usernames and login IDs are not Privately-Identifiable Information (PII). They are insufficient on their own to identify a person.

Are user IDs sensitive?

Passwords are case-sensitive to better protect your login information, while usernames are not. This means the system will recognize your username, regardless if there are capital letters or not. Passwords won't be recognize unless it is entered exactly as it was created.

What is id in database?

An identity column is a column (also known as a field) in a database table that is made up of values generated by the database. This is much like an AutoNumber field in Microsoft Access or a sequence in Oracle.