Abstract
This chapter emphasizes over the function and usage of data provider and data consumer objects. They allow applications to access data without the need to manage a raw data buffer. Data providers abstract the data reading process for URL-based data, whether the data is on a hard disk or located on the Web. When one need to provide access to data, either through direct or sequential access, one supply callback routines. This chapter illustrates that, data consumer objects have a functionality that parallels that of the data provider object. Consumers manage writing data instead of reading data, and can write to URL-based locations and to a CF-Data object. The chapter highlights that, people can also provide custom callbacks to handle writing data in a specialized way or to a custom location.
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