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SQL:
using System.Data.SqlClient;
string sql = "server=.;uid=sa;pwd=;database=tablename;";
ACCESS:
using System.Data.OleDb;
string sql = "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=" + HttpRuntime.AppDomainAppPath + "//App_Data//db.mdb";
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2.Êý¾Ý¿â¼ÓÃÜ: select encrypt('ԭʼÃÜÂë') select pwdencrypt('ԭʼÃÜÂë') select pwdcompare('ԭʼÃÜÂë','¼ÓÃܺóÃÜÂë') = 1--Ïàͬ£»·ñÔò²»Ïàͬ
3.È¡»Ø±íÖÐ×Ö¶Î: declare @list varchar(1000),@sql nvarchar(1000)&n ......

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/******************************************************************************************************************************************************
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Student(S#,Sname,Sage,Ssex) ѧÉú±í
Course(C#,Cname,T#) ¿Î³Ì±í
SC(S#,C#,score) ³É¼¨±í
Teacher(T#,Tname) ½Ìʦ±í
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1¡¢²éѯ“001”¿Î³Ì±È“002”¿Î³Ì³É¼¨¸ßµ ......

SQL Express×Ô¶¯±¸·Ý

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--ÔÚmaster¿âÖн¨Á¢Ò»¸ö±¸·ÝÊý¾Ý¿âµÄ´æ´¢¹ý³Ì.
USE master
GO
CREATE PROC p
      @db_name sysname,         --Êý¾Ý¿âÃû
      @bk_path NVARCHAR(1024)     --±¸·ÝÎļþµÄ·¾¶
 A ......
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