Which one is not a valid namespace in .net framework?
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System.Data.OleDb
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System.Web
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System.Data.xml
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System.Data.SqlClient
C
Correct answer
Explanation
.NET Framework namespace conventions follow specific patterns. System.Data.OleDb and System.Data.SqlClient are valid data provider namespaces. System.Web contains core web functionality. However, System.Data.xml doesn't exist - XML-related classes are in System.Xml or System.Xml.Linq. XML functionality is in System.Xml namespace, not under System.Data.