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ADO.NET INTERVIEW QUESTION & ANSWERS

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36. What is the use of System.Data.sqlclient namespace in ADO.Net?
  System.Data.sqlclient : This contains the objects that we use to connect to a data source . This can generally provide better performance as it removes some of the intermediate layers required by an OLE-DB connection.
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37. What is the use of System. XML namespace in ADO.Net?
  System. XML : This contains the basic objects required to create read, store, write and manipulate XML documents according to W3C recommendations.
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38. What is the preferred method for executing SQL commands that contain parameters?
  The preferred method is to use the sqlParameter and oleDbParameter objects, as detailed in the section "Using Parameters with the command Object."
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39. What are the two fundamental objects in ADO.NET?
  There are two fundamental objects in ADO.NET are :
   Datareader - connected architecture and
   Dataset - disconnected architecture.
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40. What is the use of command object?
  This is the responsible object to use stored procedure.
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