Updating server data using a web service
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The world is experiencing an evolution of Smart Cities. These emerge from innovations in information technology that, while they create new economic and social opportunities, pose challenges to our security and expectations of privacy. Humans are already interconnected via smart phones and gadgets. Smart energy meters, security devices and smart appliances are being used in many cities. Homes, cars, public venues and other social systems are now on their path to the full connectivity known as the ‘‘Internet of Things.’’ Standards are evolving for all of these potentially connected systems.
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Several online RSS service providers (essentially, Web- based RSS readers) have proposed alternative solu- tions [2, 3]. In these “outsourced aggregation” scenar- ios, a centralized service provides a remote procedure interface which end-user applications may be built upon (or refactored to use). Such an application would store all its state—the set of subscribed feeds, the set of “old” and “new” entries—on the central server. It would then poll only this server to receive all updated data.
10p giamdocamnhac 06-04-2013 56 6 Download
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Working with data and databases in C# certainly can be daunting if you're coming from VB6, VBA, or Access. With this hands-on guide, you'll shorten the learning curve considerably as you master accessing, adding, updating, and deleting data with C#-basic skills you need if you intend to program with this language. No previous knowledge of C# is necessary. By following the examples in this book, you'll learn how to tackle several database tasks in C#, such as working with SQL Server, building data entry forms, and using data in a web service. The book's code samples will help you get started...
108p hoa_can 26-01-2013 38 5 Download
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[ Team LiB ] Recipe 4.11 Updating Server Data Using a Web Service Problem You want to update a data source using an XML web service and use the web service from your client application. Solution Use a DataSet object. The XML web service code contains two methods: LoadOrders( )
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