[DelightOne]

> You also need to be careful about how you store your identifiers—the identifiers that should be stored persistently by the API implementation are almost always the identifiers that were used to form the permalinks. Using names to represent references or identity in a database is rarely the right thing to do—if you see names in a database used this way, you should examine that usage carefully.

What does this mean? Is it just to say don‘t use the name hierarchy but rather the permalink-key as identity in the database?