Craig is working to develop an XSLT application to display election results, using XML files with the structures shown in the accompanying figure. He has heard that you have experience developing applications, and comes to you for guidance.
-Now that the precinctNames key has been declared, Craig would like to use it to return a count of all votes from the precinct of Ceylon. Which of the following functions do you suggest he use to do this?
A) count(key="precinctNames" select="Ceylon")
B) count(key("precinctNames", "Ceylon") )
C) count::precinctNames//"Ceylon"
D) key("precinctNames", count("Ceylon") )

Question

Craig is working to develop an XSLT application to display election results, using XML files with the structures shown in the accompanying figure. He has heard that you have experience developing applications, and comes to you for guidance.
-Now that the precinctNames key has been declared, Craig would like to use it to return a count of all votes from the precinct of Ceylon. Which of the following functions do you suggest he use to do this?
A) count(key="precinctNames" select="Ceylon") 
B) count(key("precinctNames", "Ceylon") ) 
C) count::precinctNames//"Ceylon" 
D) key("precinctNames", count("Ceylon") )

Quizplus · Accepted Answer

The correct function to use in this case is count(key("precinctNames", "Ceylon")). This function uses the key function to retrieve the node set of all votes from the precinct of Ceylon, and then counts them using the count function. Option A is incorrect because the count function does not take a "select" parameter. Option C is incorrect because it uses the count function in a wrong context and uses an incorrect syntax for the XPath expression. Option D is incorrect because it uses the count function in a wrong context and does not reference the correct node set.

Craig Is Working to Develop an XSLT Application to Display