Abstract: A method and a system for computerized creating, maintaining, updating, and querying inventory database for the locations and the objects with time-dependent and time-independent attributes that presumes the evaluation of actual preferences for the customers (users, owners of the inventory) on the basis of interactive contacts with them over the Internet, supplying the customer with the necessary software tools for querying the said inventory database and for requesting the irregular out-of-schedule updates, creation lists of locations and locations' attributes, lists of objects and objects' attributes, generation the particular values for objects' controllable inventorial time-dependent and time-independent attributes, registration of particular values for said locations' and objects' attributes, thus creating current sections of inventory database, transmission the said sections into central data warehouse, determination of regular updating periodicity, implementation of regular and irregular updates, and p