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Download e-book for kindle: A Relational Theory of Computing by John G. Sanderson (auth.)

By John G. Sanderson (auth.)

ISBN-10: 3540099875

ISBN-13: 9783540099871

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Other services are provided at The Cloud 39 no cost. ’s business trip, the travel service might charge for each use, whereas the external CRM service might charge a monthly fee for a certain number of users and the car rental and hotel services might be free.  R. in his trip is an example of a service that can be used by organizations of any size. A one-person organization could either use only the expense reporting portion of the service or download the expense report data into accounting software on a personal computer.

JSON (JavaScript Object Notation) is one option. It uses name/value pairs instead of the tags used by XML. 13. The name/value pairs in JSON provide the same type of resilience as the XML-tagged format for data exchanges described in the previous section. The name/value pairs do not have to be in any particular order to work. 13 also shows that XML and JSON can use the same vocabulary for the names of the data elements. This opportunity for standardizing on the names and the meaning of the names will be discussed later in this chapter.

1 shows that I kept the turntable and CD player for music that I have owned for a long time. Given my background in software development, I could have digitized my existing music, loaded it on a PC attached to my AV system, and programmed software to manage all that content on my PC. That, however, would be a lot of work and would take a lot of time. I would also need to make sure my infrastructure provides the appropriate backup capability, including off-site backup. It turned out, however, that I rarely played a CD and never played my old vinyl records.

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A Relational Theory of Computing by John G. Sanderson (auth.)


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