8. The method of claim 7 , further comprising using the relational data store to store the data graphs as anonymized nodes, edges connecting the nodes, and an index for the nodes, and using the non-relational data store to store attributes of the notes, edges, and index nodes.
7. The method of claim 6 , further comprising segmenting the type schema for extended type-level properties by domains to enable complete removal of domain-specific properties/attributes while maintaining validity of anonymized data entities and relationships.