Java连接MySQL

　　protected final static String DB_DRIVER = "com.mysql.jdbc.Driver";

　　protected final String DB_URL = "jdbc:mysql://localhost:3306/melancholy?characterEncoding=utf8&useSSL=true";

　　protected final String DB_USER = "a0109151216";

　　protected final String DB_PWD = "44045d6f";

　　Class.forName(DB_DRIVER);

　　connection = DriverManager.getConnection(DB_URL, DB_USER, DB_PWD);

Java连接SQLserver

　　private static final String DB_DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

　　private static final String DB_URL = "jdbc:sqlserver://localhost:1433;databasename=easybuy";

　　private static final String DB_USER = "sa";

　　private static final String DB_PWD = "sa";

　　Class.forName(DB_DRIVER);

　　conn = DriverManager.getConnection(DB_URL,DB_USER,DB_PWD);

C#连接MySQL

　　<connectionStrings>

　　　　<add name ="MainConnectionString"

　　　　　　connectionString="Server=localhost;Database=Melancholy;Uid=root;Pwd=root.;"

　　　　　　providerName="System.Data.MySqlClient"/>

　　</connectionStrings>

C#连接SQLserver

　　<connectionStrings>

　　　　<add name ="MyHomeConnectionString"

　　　　　　connectionString="Data Source=.;Initial Catalog=HotelManageEx;User ID=sa;Password=sa"

　　　　　　providerName="System.Data.SqlClient"/>

　　</connectionStrings>

数据库连接语句