Abstract: Methods and systems of processing queries in a database system and adapting a polling decision in the database system. A piece of cached data is retrieved that matches a selected search query. A piece of original data is retrieved from an original data source that matches the selected search query. A determination is made whether the piece of cached data coincides with the piece of original data. For each of a plurality of modification queries to modify pieces of the original data in the original data source, a determination is made whether the selected modification query is associated with a search query for which the piece of the cached data does not coincide with the piece of the original data. A probabilistic model is adapted based on the results of the determinations with respect to the selected modification queries using a machine learning algorithm.

Abstract: Methods, systems, and computer program products for generating a payment solution. A request to generate a payment solution for a priced travel solution comprising at least one travel inventory item using a plurality of forms of payment may be received. Responsive to receiving the request, a payment amount may be allocated to each of the plurality of forms of payment based at least in part on a payment hierarchy that defines an order in which the plurality of forms of payment are to be used for payment of the priced travel solution and at least one payment constraint associated with at least one of the plurality of forms of payment. The payment solution may be generated based on the allocated payment amounts.

Abstract: Methods, systems, and computer program products to securely pay for a travel booking. A travel booking may be generated at a reservation system based on booking data received from a reservation device for a customer. Issuance of a ticket for the travel booking may be held pending a confirmation of payment from a payment processor. A customer device of the customer may be interfaced with the payment processor via the reservation system to authenticate payment information for paying for the travel booking, and a payment confirmation may communicated to the reservation system. The ticket may be issued by the reservation system responsive to receiving the payment confirmation.