Many relational database attributes' values might be encrypted for safety. Can you tell me why encrypted attributes aren't standard in database management systems? Why do you believe it's problematic that most database management systems don't provide encryption for primary-key features?

The fundamental properties of a main key are as follows:

For each row of data, it must include a different value. Null values are not allowed to be present.

Depending on the scenario, a primary key may be either an existing table column or a column that is specifically constructed by the database in accordance with a preset sequence.