Abstract: A method and system for performing predictive querying on vector graph document database that includes entities wherein each entity has a Unique IDentifier (UID) tag field, and a schema or array of schema fields, the method including performing probabilistic querying by means of data links that include source, destination, transform, program and data fields, the transform field including a data subfield that refers to the probabilistic, conditional relation between two entities, and a program subfield that defines an infer method and a learn method.