The first stage of the standardised Decisional System in the Global Artificial Intelligence (GAI) is the database of decisions, a structured repository where all decisions issued by the Modelling System are archived. Organised according to sub-factoring level (geographical scope), sub-section (subject), and priority level, the database enables efficient rational assessment by categorising decisions into discrete sets. Through a unified list and logical set system, the Decisional System performs quick rational checks and rational adjustments based on variables such as relative frequency and frequency of contradictions. This stage also supports the classification of decisions into quick, normal, and automatic types, facilitating scalable, harmonised, and autonomous decision-making across all domains of knowledge and application. The first stage thus forms the operational foundation for the broader deductive and applicative processes of the GAI.