互联网技术学院周测机试题(三)
一、需求分析
为进一步完善连锁超市经营管理,提高管理效率,减少管理成本,决定开发一套商品管理系统,用于日常的管理。本系统分为商品管理、员工管理、店铺管理,库存管理等功能模块。本次开发,主要针对库存管理功能,具备显示各类商品库存量、进货管理等功能,具体数据库设计如下,请你根据需求完成数据库的设计与相应功能。
二、数据字典
表1:库存表(stock)
CREATE TABLE stock(sid int PRIMARY KEY auto_increment,goodsname VARCHAR(50) NOT NULL,num int,wid int,CONSTRAINT fk_wid FOREIGN KEY(wid) REFERENCES warehouse(wid),title VARCHAR(20) NOT NULL);
表2:仓库表(warehouse)
CREATE TABLE warehouse(wid int PRIMARY KEY auto_increment,wname VARCHAR(20) NOT NULL);
测试数据
stock表:
INSERT INTO `stock` VALUES (1, '飞利浦SP100净化器', 20, 1, '贵重商品');INSERT INTO `stock` VALUES (2, '山东红富士苹果(一级果)', 60, 3, '快消商品');INSERT INTO `stock` VALUES (3, '康师傅桶装方便面(红烧牛肉面)', 100, 2, '快消商品');INSERT INTO `stock` VALUES (4, '格力NS-8823变频空调', 10, 1, '库存较少');INSERT INTO `stock` VALUES (5, '泰国山竹特级', 150, 3, '临近保质期');
warehouse:
INSERT INTO `warehouse` VALUES (1, '华北1号仓库');INSERT INTO `warehouse` VALUES (2, '华北2号仓库');INSERT INTO `warehouse` VALUES (3, '华南2号仓库');
三、功能实现
1、在华南2号仓库增加30辆捷安特BT22自行车,注意事项为贵重商品。
INSERT INTO stock VALUES(null,'捷安特BT22自行车',30,3,'贵重商品')
2、显示华北所有仓库的商品名称与库存数量。
SELECT wname,goodsname,num FROM stock s,warehouse w WHERE s.wid=w.wid AND wname LIKE '华北%'
3、统计各仓库的库存商品总量,显示仓库名称和库存商品总量。
SELECT wname,SUM(num) FROM stock s,warehouse w WHERE s.wid=w.wid GROUP BY wname
4、修改泰国山竹特级销售100KG后,剩余的库存量。
UPDATE stock SET num=(num-100) WHERE goodsname='泰国山竹特级'
5、更改康师傅桶装方便面(红烧牛肉面)的仓库名称为“华北4号仓库”。
UPDATE warehouse SET wname='华北4号仓库' WHERE wid=(SELECT wid FROM stock WHERE goodsname='康师傅桶装方便面(红烧牛肉面)')
数据库完整导入代码:
-- ------------------------------ Table structure for stock-- ----------------------------DROP TABLE IF EXISTS `stock`;CREATE TABLE `stock` (`sid` int(11) NOT NULL AUTO_INCREMENT,`goodsname` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,`num` int(11) NULL DEFAULT NULL,`wid` int(11) NULL DEFAULT NULL,`title` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,PRIMARY KEY (`sid`) USING BTREE,INDEX `fk_wid`(`wid`) USING BTREE,CONSTRAINT `fk_wid` FOREIGN KEY (`wid`) REFERENCES `warehouse` (`wid`) ON DELETE RESTRICT ON UPDATE RESTRICT) ENGINE = InnoDB AUTO_INCREMENT = 6 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;-- ------------------------------ Records of stock-- ----------------------------INSERT INTO `stock` VALUES (1, '飞利浦SP100净化器', 20, 1, '贵重商品');INSERT INTO `stock` VALUES (2, '山东红富士苹果(一级果)', 60, 3, '快消商品');INSERT INTO `stock` VALUES (3, '康师傅桶装方便面(红烧牛肉面)', 100, 4, '快消商品');INSERT INTO `stock` VALUES (4, '格力NS-8823变频空调', 10, 1, '库存较少');INSERT INTO `stock` VALUES (5, '泰国山竹特级', 50, 3, '临近保质期');-- ------------------------------ Table structure for warehouse-- ----------------------------DROP TABLE IF EXISTS `warehouse`;CREATE TABLE `warehouse` (`wid` int(11) NOT NULL AUTO_INCREMENT,`wname` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,PRIMARY KEY (`wid`) USING BTREE) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;-- ------------------------------ Records of warehouse-- ----------------------------INSERT INTO `warehouse` VALUES (1, '华北1号仓库');INSERT INTO `warehouse` VALUES (2, '华北2号仓库');INSERT INTO `warehouse` VALUES (3, '华南2号仓库');INSERT INTO `warehouse` VALUES (4, '华北4号仓库');