70-320 XML Web Services and Server Components with C#.NET Exam Questions

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70-320 XML Web Services and Server Components with C#.NET

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Demo Question 9.

You are working on an XML application using C# which may read XML files without schemas. Which approach will you choose? (Select the best choice.)

A. Dim dsData As DataSet dsData.ReadXml ("myinfo.xml", XmlReadMode.Infer)
B. Dim fsMain As New SystemIO.FileStream ("myinfo.xml", System.IO.FileMode.Create) Dim dsData As DataSet dsData.ReadXml(fsMain, XmlReadMode.IgnoreSchema)
C. Dim dsData As DataSet = New dsData.ReadXml("myinfo.xml", XmlReadMode.IgnoreSchema)
D. Dim dsData As DataSet dsData.ReadXml ("myinfo.xml", XmlReadMode.DiffGram)
E. Dim dsData As DataSet dsData.ReadXml ("myinfo.xml", XmlReadMode. MissingSchema)
F. Dim dsData As DataSet = New dsData.ReadXml("myinfo.xml", XmlReadMode.Infer)
G. Dim dsData As DataSet dsData.ReadXml ("myinfo.xml", XmlReadMode.InferSchema)

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Answer: G When XML data is intended to be used in a DataSet object, it is important to know the data structure, or schema. If the schema is not available with the data, then the data can still be used if the XmlReadMode parameter of the ReadXml method is set to InferSchema. When InferSchema is used, elements and attributes in the XML help determine tables and columns.

Explanation: