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This article introduces the elements that we replaced together in order to achieve a decisional technology that can offer trust. Thus, we refer to it as Decisional Trust. Enhancing a decisional knowledge system with trust means that the user relies on what the system knows and that the system possesses a qualified reliance on received knowledge. Our proposal works in two fronts:(i) the construction of Reflexive Ontologies; and (ii)the construction of Decisional DNA. Then, we add trust models in order to gain certainty based upon the past decisional experience, and just until then, we can refer to the system as a Decisional Trust System. Additionally, an augmented reality (AR)maintenance system is improved by adding the elements of decisional trust. This framework improves the quality of decision-making, and advances the notion of administering trustable knowledge in the current decision making environment.