From WebCenter 14 onwards, Database Lists can be used for Cascading Attributes and Asset Browsers. During the setup of such a List, you will typically create a new database table for storing the data. You can either enter a Database user (such as sa) and Password to configure this or you can choose to use the built-in webcenter database user account.
The advantage of using the webcenter database user account is that other Admin users can configure Lists without needing to know the Database user password. However, on a SQL database, the webcenter database user does need some additional permissions for this feature to function properly.