ACID and relational are orthogonal. You can have ACID properties without a relational model. Much of the early literature on the subject merely discusses data

ACID and relational are orthogonal. You can have ACID properties without a relational model. Much of the early literature on the subject merely discusses databases in general rather than any particular type. Here's an example from Jim Grey: http://jimgray.azurewebsites.net/papers/thetransactionconcept.pdf http://jimgray.azurewebsites.net/papers/thetransactionconcep...