diff --git "a/12 \345\217\266\344\277\212\350\275\266/.keep" "b/12 \345\217\266\344\277\212\350\275\266/.keep" new file mode 100644 index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 diff --git "a/12 \345\217\266\344\277\212\350\275\266/20230904/20230904 \347\254\224\350\256\260.md" "b/12 \345\217\266\344\277\212\350\275\266/20230904/20230904 \347\254\224\350\256\260.md" new file mode 100644 index 0000000000000000000000000000000000000000..c4a4d46432566fa6bf3ab962d0f7b490d91bc8f1 --- /dev/null +++ "b/12 \345\217\266\344\277\212\350\275\266/20230904/20230904 \347\254\224\350\256\260.md" @@ -0,0 +1,15 @@ +2023年09月04日 + +周一 + +天气：阴 + +心情：好 + +今天是开学的第一次课，邱总为了让我们从暑假缓过劲，先是给我们看了下*”程序员思维“**我还挺喜欢这么干的，就是到处找破解方法，尤其是vip解析跟暴力猴，暴力猴其实我很早就在用，看一些资源很好用。随后又开展了一次会谈，主要是谈论我们暑期干了些什么。其实我并不爱听，但其中一位同学的言论我很感兴趣，具体内容不记得，但结论我很赞同，大致是***：给老板开车，能够接触到一些老板，学习他们的谈吐。****由于一些原因，我也能接触到一些老板， 我并不是很爱跟他们聊天，但他们的谈吐确实潜移默化改变了我，倾听时候的反应，说话的腔调，肯定他们言论该怎么回答。那位同学能意识到这点确实是用心了。 + + + + + + diff --git "a/12 \345\217\266\344\277\212\350\275\266/20230905/20230905 \344\275\234\344\270\232\346\227\245\345\277\227.md" "b/12 \345\217\266\344\277\212\350\275\266/20230905/20230905 \344\275\234\344\270\232\346\227\245\345\277\227.md" new file mode 100644 index 0000000000000000000000000000000000000000..308b69982f0954cac8e70078dcd8885d30936167 --- /dev/null +++ "b/12 \345\217\266\344\277\212\350\275\266/20230905/20230905 \344\275\234\344\270\232\346\227\245\345\277\227.md" @@ -0,0 +1,159 @@ +笔记 + +2023年09月05日 + +周二 + +天气：阵雨 + +心情：不好 + +今天是周二，外面下大雨，教室还热的一p，上课有点走神，大致还是记住了：制作ER视图用**微软自带的软件[visio]**，为什么要做视图呢，其实很好理解，就像做工程前需要提前规划管理一样，工程原件是要给甲方一份的，我们要用ER图给甲方看。——用方块表示实体，即老师或学生，用椭圆表示属性，比如老师有教师编号，学生有学生编号，用连接线链接，中间放上菱形表示之间的关系，在连接线的两段打上1或n表示几个对象，学这个感觉更专业了，但我的心还在诗和远方，什么时候国庆啊？ + +```sql +/* + Navicat Premium Data Transfer + + Source Server : MySQL + Source Server Type : MySQL + Source Server Version : 50741 (5.7.41-log) + Source Host : localhost:3306 + Source Schema : zuoye + + Target Server Type : MySQL + Target Server Version : 50741 (5.7.41-log) + File Encoding : 65001 + + Date: 06/09/2023 16:32:23 +*/ + +SET NAMES utf8mb4; +SET FOREIGN_KEY_CHECKS = 0; + +-- ---------------------------- +-- Table structure for banji +-- ---------------------------- +DROP TABLE IF EXISTS `banji`; +CREATE TABLE `banji` ( + `Bid` int(11) NOT NULL AUTO_INCREMENT, + `Bname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, + `Zid` int(11) NULL DEFAULT NULL, + PRIMARY KEY (`Bid`) USING BTREE, + INDEX `Zid`(`Zid`) USING BTREE, + CONSTRAINT `Zid` FOREIGN KEY (`Zid`) REFERENCES `zhuanye` (`Zid`) ON DELETE RESTRICT ON UPDATE RESTRICT +) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic; + +-- ---------------------------- +-- Records of banji +-- ---------------------------- +INSERT INTO `banji` VALUES (1, '软件技术1班', 1); +INSERT INTO `banji` VALUES (2, '软件技术2班', 1); +INSERT INTO `banji` VALUES (3, '软件技术3班', 1); +INSERT INTO `banji` VALUES (4, '软件技术4班', 1); + +-- ---------------------------- +-- Table structure for course +-- ---------------------------- +DROP TABLE IF EXISTS `course`; +CREATE TABLE `course` ( + `cid` int(11) NOT NULL, + `cname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, + `Tid` int(11) NULL DEFAULT NULL, + `didian` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, + `shijian` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, + PRIMARY KEY (`cid`) USING BTREE, + INDEX `Tid`(`Tid`) USING BTREE, + CONSTRAINT `Tid` FOREIGN KEY (`Tid`) REFERENCES `teacher` (`Tid`) ON DELETE RESTRICT ON UPDATE RESTRICT +) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic; + +-- ---------------------------- +-- Records of course +-- ---------------------------- +INSERT INTO `course` VALUES (1, '韩信教学', 4, '王者峡谷', '周一到周天全天'); +INSERT INTO `course` VALUES (2, '数据库', 1, '王云楼', '周一到周五'); +INSERT INTO `course` VALUES (3, '心理', 3, '闽大第一食堂', '周一到周天全天'); +INSERT INTO `course` VALUES (4, '忘了叫啥', 2, '食堂肥肠粉挺好吃的', '单双周'); + +-- ---------------------------- +-- Table structure for stu +-- ---------------------------- +DROP TABLE IF EXISTS `stu`; +CREATE TABLE `stu` ( + `sid` int(11) NOT NULL, + `sname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, + `Bid` int(11) NULL DEFAULT NULL, + `cid` int(11) NULL DEFAULT NULL, + INDEX `Bid`(`Bid`) USING BTREE, + INDEX `cid`(`cid`) USING BTREE, + CONSTRAINT `Bid` FOREIGN KEY (`Bid`) REFERENCES `banji` (`Bid`) ON DELETE RESTRICT ON UPDATE RESTRICT, + CONSTRAINT `cid` FOREIGN KEY (`cid`) REFERENCES `course` (`cid`) ON DELETE RESTRICT ON UPDATE RESTRICT +) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic; + +-- ---------------------------- +-- Records of stu +-- ---------------------------- +INSERT INTO `stu` VALUES (1, '轶哥', 1, 1); +INSERT INTO `stu` VALUES (1, '轶哥', 1, 2); +INSERT INTO `stu` VALUES (1, '轶哥', 1, 3); +INSERT INTO `stu` VALUES (1, '轶哥', 1, 4); +INSERT INTO `stu` VALUES (2, '梦之泪伤', 1, 4); +INSERT INTO `stu` VALUES (3, '李俊阳', 1, 2); +INSERT INTO `stu` VALUES (4, '啃臭', 3, 4); +INSERT INTO `stu` VALUES (5, '安排', 3, 1); +INSERT INTO `stu` VALUES (5, '安排', 3, 3); + +-- ---------------------------- +-- Table structure for teacher +-- ---------------------------- +DROP TABLE IF EXISTS `teacher`; +CREATE TABLE `teacher` ( + `Tid` int(11) NOT NULL AUTO_INCREMENT, + `Tname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, + PRIMARY KEY (`Tid`) USING BTREE +) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic; + +-- ---------------------------- +-- Records of teacher +-- ---------------------------- +INSERT INTO `teacher` VALUES (1, '邱邱'); +INSERT INTO `teacher` VALUES (2, '娟娟'); +INSERT INTO `teacher` VALUES (3, '念念'); +INSERT INTO `teacher` VALUES (4, '梦泪'); + +-- ---------------------------- +-- Table structure for yuanxi +-- ---------------------------- +DROP TABLE IF EXISTS `yuanxi`; +CREATE TABLE `yuanxi` ( + `Yid` int(11) NOT NULL AUTO_INCREMENT, + `Yname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, + PRIMARY KEY (`Yid`) USING BTREE +) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic; + +-- ---------------------------- +-- Records of yuanxi +-- ---------------------------- +INSERT INTO `yuanxi` VALUES (1, '软件工程'); + +-- ---------------------------- +-- Table structure for zhuanye +-- ---------------------------- +DROP TABLE IF EXISTS `zhuanye`; +CREATE TABLE `zhuanye` ( + `Zid` int(11) NOT NULL AUTO_INCREMENT, + `Zname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, + `Yid` int(11) NOT NULL, + PRIMARY KEY (`Zid`) USING BTREE, + INDEX `Yid`(`Yid`) USING BTREE, + CONSTRAINT `Yid` FOREIGN KEY (`Yid`) REFERENCES `yuanxi` (`Yid`) ON DELETE RESTRICT ON UPDATE RESTRICT +) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic; + +-- ---------------------------- +-- Records of zhuanye +-- ---------------------------- +INSERT INTO `zhuanye` VALUES (1, '后端', 1); + +SET FOREIGN_KEY_CHECKS = 1; + +SELECT sid,sname,banji.Bname,zhuanye.Zname,yuanxi.Yid,yuanxi.Yname,course.cname,teacher.Tname,didian,shijian FROM course LEFT JOIN teacher on course.Tid = teacher.Tid LEFT JOIN stu on stu.cid = course.cid LEFT JOIN banji on stu.Bid = banji.Bid LEFT JOIN zhuanye on banji.Zid = zhuanye.Zid LEFT JOIN yuanxi on zhuanye.Yid = yuanxi.Yid WHERE cname="韩信教学"; +``` diff --git "a/12 \345\217\266\344\277\212\350\275\266/20230905/20230905.png" "b/12 \345\217\266\344\277\212\350\275\266/20230905/20230905.png" new file mode 100644 index 0000000000000000000000000000000000000000..0b7e7f8aaa2d0d764581a5db43d881dae8ba8947 Binary files /dev/null and "b/12 \345\217\266\344\277\212\350\275\266/20230905/20230905.png" differ