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ADO.NET INTERVIEW QUESTION & ANSWERS

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41. What .NET tools arc used to automatically generate XML Schemas and typed datasets?
  Use either Visual Studio or the XSD.exe tool.
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42. What are different types of Commands available with DataAdapter ?
  The SqlDataAdapter are :
  • Select Command
  • Insert Command
  • Delete Command
  • Update Command
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43. What is the use of data adapter?
  These objects connect one or more command objects to a Dataset object.
An OleDb Data Adapter object is used with an OLE-DB provider.
A Sql Data Adapter object uses Tabular Data Services with MS SQL Server.
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44. What is a DataSet?
  A DataSet is an in memory representation of data loaded from any data source.
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45. What method is used by the command classes to execute commands that do not return resultsets, such as the SELECT COUNT command?
  The Execute Non Query method executes SQL commands that don't return a result set.
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