Abstract: A method in an aggregator server of synchronizing data records responsive to variable update notifications includes: receiving, from a provider system, an update notification corresponding to a master data object at the provider system; retrieving a record containing a local data object corresponding to the master data object; determining whether the update notification contains update definitions identifying changes to the master data object; selecting between a delta synchronization mode, when the determination is affirmative, and an object comparison synchronization mode, when the determination is negative; for the delta synchronization mode, updating the local data object according to the update definitions; for the object comparison synchronization mode, obtaining a copy of the master data object, and updating the local data object based on a comparison between the local data object and the copy of the master data object; and storing the updated local data object in the record at the aggregator.

Abstract: Onboard servers, and methods for communicating over wireless interface between an onboard server installed in an airplane and a ground server located remote from the airplane. Executable application code and first user data is received by the onboard server from the ground server before take-off of the airplane and stored. At least a part of the executable application code is executed by the onboard server. The onboard server receives delta user data from the ground server after the take-off and before landing of the airplane. The first delta user data updates the first user data to form second user data. The onboard server, after takeoff and before landing of the airplane, transmits at least a portion of the second user data to a seat entertainment terminal mounted within the airplane and/or to a personal mobile terminal of a user aboard the airplane for presentation to the user.

Abstract: Onboard servers, and methods for communicating over wireless interface between an onboard server installed in an airplane and a ground server located remote from the airplane. Executable application code and first user data is received by the onboard server from the ground server before take-off of the airplane and stored. At least a part of the executable application code is executed by the onboard server. The onboard server receives delta user data from the ground server after the take-off and before landing of the airplane. The first delta user data updates the first user data to form second user data. The onboard server, after takeoff and before landing of the airplane, transmits at least a portion of the second user data to a seat entertainment terminal mounted within the airplane and/or to a personal mobile terminal of a user aboard the airplane for presentation to the user.

Abstract: A method and a system for generating personal promotion codes from the computing resources of a provider of services. Internal promotion codes including a family ID field and serial ID field of alphanumeric characters are first generated. The internal promotion codes are then encoded into a corresponding series of external promotion codes of alphanumeric characters, which render the internal promotion codes unintelligible. After which the series of external promotion codes is packed into an encrypted file which is forwarded to a client application of the provider of services to have the external promotion codes distributed to its customers. The external promotion codes later submitted to the client application by the customers are further validated by the provider of services. Validation of the external promotion codes submitted by the customers does not require that all generated external promotion codes need to be stored in a database of the provider of services.

Abstract: A method and a system for generating personal promotion codes from the computing resources of a provider of services are described. Internal promotion codes including a family ID field and a serial ID field comprised of alphanumeric characters are first generated. The internal promotion codes are then encoded into a corresponding series of external promotion codes also comprised of alphanumeric characters, which render the internal promotion codes unintelligible. After which the series of external promotion codes is packed into an encrypted file which is forwarded to a client application of the provider of services to have the external promotion codes distributed to its customers. The external promotion codes later submitted to the client application by the customers are further validated by the provider of services. Validation of the external promotion codes submitted by the customers does not require that all generated external promotion codes need to be stored in a database of the provider of services.