Yes it is a pure ANN - according to my use of the term ANN (arguing over definitions is a waste of time). ANNs are fully general circuit models, which obviously can re-implement any module from any computer - memory, database, whatever. The defining characteristics of an ANN are - simulated network circuit structure based on analog/real valued nodes, and some universal learning algorithm over the weights - such as SGD.

You could say that any machine learning system is an ANN, under a sufficiently vague definition. That's not particularly useful in a discussion, however.