JavaWeb项目开发案例精粹-第2章投票系统-001设计

1.项目结构

2.数据库设计

 # MySQL-Front 5.0  (Build 1.0)

 /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE */;
 /*!40101 SET SQL_MODE='STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' */;
 /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES */;
 /*!40103 SET SQL_NOTES='ON' */;

 # Host: localhost    Database: db_votemanage
 # ------------------------------------------------------
 # Server version 5.0.67-community-nt

 DROP DATABASE IF EXISTS `db_votemanage`;
 CREATE DATABASE `db_votemanage` /*!40100 DEFAULT CHARACTER SET gb2312 */;
 USE `db_votemanage`;

 #
 # Table structure for table tb_channel
 #

 CREATE TABLE `tb_channel` (
   `channelID` int(11) NOT NULL auto_increment,
   `channelName` varchar(255) default NULL,
   PRIMARY KEY  (`channelID`)
 ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=gb2312 COMMENT='投票频道表';
 INSERT INTO `tb_channel` VALUES (1,'NBA');
 INSERT INTO `tb_channel` VALUES (2,'CBA');
 INSERT INTO `tb_channel` VALUES (3,'足球世界杯');
 INSERT INTO `tb_channel` VALUES (4,'中超');
 INSERT INTO `tb_channel` VALUES (5,'英超');
 INSERT INTO `tb_channel` VALUES (6,'F1');

 #
 # Table structure for table tb_vote
 #

 CREATE TABLE `tb_vote` (
   `voteID` int(11) NOT NULL auto_increment,
   `voteName` varchar(255) default NULL,
   `channelID` int(11) default NULL,
   PRIMARY KEY  (`voteID`),
   KEY `channelID` (`channelID`)
 ) ENGINE=InnoDB AUTO_INCREMENT=14 DEFAULT CHARSET=gb2312 COMMENT='投票表';
 INSERT INTO `tb_vote` VALUES (13,'请选择你最喜欢的CBA球员',2);

 #
 # Table structure for table tb_voteoption
 #

 CREATE TABLE `tb_voteoption` (
   `voteOptionID` int(11) NOT NULL auto_increment,
   `voteID` int(11) default NULL,
   `voteOptionName` varchar(255) default NULL,
   `ticketNum` int(11) default '0',
   PRIMARY KEY  (`voteOptionID`),
   KEY `voteID` (`voteID`)
 ) ENGINE=InnoDB AUTO_INCREMENT=55 DEFAULT CHARSET=gb2312 COMMENT='投票选项表';
 INSERT INTO `tb_voteoption` VALUES (51,13,'朱芳宇',0);
 INSERT INTO `tb_voteoption` VALUES (52,13,'王治郅',1);
 INSERT INTO `tb_voteoption` VALUES (53,13,'姚明',0);
 INSERT INTO `tb_voteoption` VALUES (54,13,'易建联',0);

 #
 #  Foreign keys for table tb_vote
 #

 ALTER TABLE `tb_vote`
 ADD CONSTRAINT `tb_vote_ibfk_1` FOREIGN KEY (`channelID`) REFERENCES `tb_channel` (`channelID`);

 #
 #  Foreign keys for table tb_voteoption
 #

 ALTER TABLE `tb_voteoption`
 ADD CONSTRAINT `tb_voteoption_ibfk_1` FOREIGN KEY (`voteID`) REFERENCES `tb_vote` (`voteID`);

 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 /*!40101 SET SQL_MODE=@OLD_SQL_MODE */;

3.运行效果

4.

5.