Every user of a database has a password. UltraLite supports up to four user ID/password combinations.
You can set passwords to NULL or an empty string.
A random 4-byte salt value is generated when a new user is created or an existing user changes their password. The salt value
is appended to the user's password when calculating the password hash and is stored in the database along with the hash. Salting
significantly decreases vulnerability to dictionary attacks and also ensures that users with the same password will have different