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ADO.NET INTERVIEW QUESTION & ANSWERS

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81. What two classes are used to open and connect to a database using ADO.NET?
  Use the SqlConnection and OleDbConnection classes to connect to a database using ADO.NET.
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82. What two classes are used to execute arbitrary SQL commands in a database using ADO.NET?
  The SqlCommand and OleDbCommand classes are used to execute SQL commands using ADO.NET.
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83. Describe ADO.NET Architecture?
 
    ADO.NET provides the efficient way to manipulate the database. It contains the following major components are :
  • DataSet Object
  • Data Providers :
  •       ›› Connection Object
           ››Command Object
           ››DataReader Object
           ››DataAdapter Object
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84. What are the data access namespaces in .NET?
 
  • System.Data
  • System.Data.OleDb
  • System.Data.SQLClient
  • System.Data.SQLTypes
  • System.Data.XML
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85. What providers does Ado.net uses?
  The .NET Framework provides mainly three data providers, they are Microsoft SQL Server, OLEDB, ODBC.
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