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using System;
using System.Threading;
namespace ConsoleApplication1
{
 /// <summary>
 /// Class1 µÄժҪ˵Ã÷¡£
 /// </summary>
 class Class1
 {
  /// <summary>
  /// Ó¦ÓóÌÐòµÄÖ÷Èë¿Úµã¡£
  /// </summary>
  [STAThread]
  static void Main(string[] args)
  {
   //
   // TODO: ÔÚ´Ë´¦Ìí¼Ó´úÂëÒÔÆô¶¯Ó¦ÓóÌÐò
   //
   Thread thread1 = new Thread(new ThreadStart(Method1));
   Thread thread2 = new Thread(new ThreadStart(Method2));
   thread1.Start();
   thread2.Start();
  
  }
  public static void Method1()
  {
   while(true)
   {
    Console.WriteLine("this is thread : 1");
    Thread.Sleep(1000);
   }
  
  }
  public static void Method2()
  {
   while (true)
   {
    Console.WriteLine("this is thread : 2");
    Thread.Sleep(2000);
   }
  }
 }
}/
////////////////////////////////////////////////////////////////////////////////////////////////////////////
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DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK)
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CREATE DATABASE database-name
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drop database dbname
3¡¢ËµÃ÷£º±¸·Ýsql server
--- ´´½¨ ±¸·ÝÊý¾ÝµÄ device
USE master
EXEC sp_addumpdevice 'disk', 'testBack', 'c:\mssql7backup\MyNwind_1.dat'
--- ¿ªÊ¼ ±¸·Ý
BACKUP DATABASE pubs TO testBack
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