RDBMS's, put a large focus on data integrity and access within the datastore layer itself (To differing degrees); NoSQL systems more or less offload that respon

RDBMS's, put a large focus on data integrity and access within the datastore layer itself (To differing degrees); NoSQL systems more or less offload that responsibility into the application layer. There is still a responsibility of running it within a trusted network. This is a decision that may not be appropriate for everyone, but that does not make it wrong. Many people who used mySQL to power web applications did use just one credential to access the database. In that scenario the authentication overhead is pretty much just a waste of time.