常见JDBC连接字符串

1.AccessClass.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection cn = DriverManager.getConnection( "dbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=F:\\data.mdb", sUsr, sPwd);

2. MySQL (http://www.mysql.com/) mm.mysql-2.0.2-bin.jar
Class.forName("org.gjt.mm.mysql.Driver");
cn = DriverManager.getConnection( "jdbc:mysql://MyDbComputerNameOrIP:3306/myDatabaseName", sUsr, sPwd );
或:Class.forName("com.mysql.jdbc.Driver");
cn = DriverManager.getConnection( "jdbc:mysql://localhost:3306/mydata?user=root&password=root");

3. Microsoft SQLServer (http://jtds.sourceforge.net/)
Class.forName("net.sourceforge.jtds.jdbc.Driver");
cn = DriverManager.getConnection( "jdbc:jtds:sqlserver://MyDbComputerNameOrIP:1433/master", sUsr, sPwd );

4. Microsoft SQLServer (http://www.microsoft.com/)
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
cn = DriverManager.getConnection( "jdbc:microsoft:sqlserver://MyDbComputerNameOrIP:1433;databaseName=master", sUsr, sPwd );

5. oracle (http://www.oracle.com/ip/deploy/database/oracle9i/) classes12.zip
Class.forName("oracle.jdbc.driver.OracleDriver");
cn = DriverManager.getConnection( "jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", sUsr, sPwd );

6. Sybase (http://jtds.sourceforge.net/) jconn2.jar
Class.forName("com.sybase.jdbc2.jdbc.SybDriver");
cn = DriverManager.getConnection( "jdbc:sybase:Tds:MyDbComputerNameOrIP:2638", sUsr, sPwd ); // (Default-Username/Password: "dba"/"sql")

7. ODBC
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection cn = DriverManager.getConnection( "jdbc:odbc:" + sDsn, sUsr, sPwd);

8.DB2Class.forName("Com.ibm.db2.jdbc.net.DB2Driver");
String url="jdbc:db2://192.9.200.108:6789/SAMPLE"
cn = DriverManager.getConnection( url, sUsr, sPwd );

9. PostgreSQL (http://www.de.postgresql.org/) pgjdbc2.jar
Class.forName("org.postgresql.Driver");
cn = DriverManager.getConnection( "jdbc:postgresql://MyDbComputerNameOrIP/myDatabaseName", sUsr, sPwd );

n进制整数乘法口诀表 生成器 javaScript实现：
//value:n进制数值（char 0..f）
//numbericSystem:进制(char 0..f)
//return:十进制值
function toNum(value,numbericSystem){
//n进制转换十进制

}
//value:十进制数(Integer)
//numbericSystem:进制(char 0..f)
//return:n进制值（String）
function toSys(value,numbericSystem){
//十进制转换n进制
}
//multiplicand:乘数(char)
//multiplicator:被乘数(char)
//numbericSystem:进制(char)
function cheng(multiplicand,multiplicator,numbericSystem:char){
var a=toNum(multiplicand,numbericSystem);
var b=toNum(multiplicator,numbericSystem);
return toSys(a*b,numbericSystem);
}