Using Options in the XSL Templates to Create Selective Data Extractions
The data extractions in the previous hour are the simplest ones to perform. When the template acts on the data in the XML file, it simply goes through the data sequentially and displays the data values of all the nodes whose names are in the selection criteria. In practice, this is rarely done. The power of database operations is that you can examine the data set and select only those values that fit some precise set of criteria.
XSL templates allow for the inclusion of qualifying options that can be included in the commands. These options either change the order of the output or filter out all data values except for the ones matching the criteria defined by the qualifiers. ...
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