E-wallet

E-shopping e-wallet is a commonly used payment instrument, as its suitable for small purchases. In the electronic wallet storing the electronic money, such as electronic cash, electronic coins, electronic credit cards. Electronic purse shopping. Usually in the service system for electronic wallet. E-commerce activities in the electronic wallet software is usually free of charge. The world has two major online VISA Cash and Mondex electronic wallet system.
OGSA most prominent idea is to "service" as the center. In the OGSA framework, everything will be abstracted as services, including computer programs, data, equipment, etc. This concept is conducive to a unified standard interface through the management and use of the grid. Web Service provides a service-based framework, however, Web Service are generally faced with a permanent service, and in the grid environment, a large number of the temporary short-term services, such as a computing task execution. Taking into account the specific characteristics of grid environment, OGSA services in the original Web Service based on the concept, proposed the "Grid Service (Grid Service)" concept for solving service discovery, dynamic service creation, service lifecycle management and temporary service related issues.
Based on the concept of grid services, OGSA entire grid as a "grid service" collection, but this collection is not static, can be extended, which reflects the dynamic nature of the grid. Grid services by defining the interface to perform different functions, the service is data about the grid service instance information, the grid service can be simply expressed as a "grid service = interface / behavior + service data."
At present, the grid services interface is still relatively limited, OGSA is continually improving the process, the next step will consider expanding the management, security, etc. aspects.