diff --git "a/56 \346\242\205\345\277\240\351\222\246/2023.09.11.md" "b/56 \346\242\205\345\277\240\351\222\246/2023.09.11.md"
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+```sql
+*/
+
+create database tsg;
+
+use tsg;
+
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for attendantm
+-- ----------------------------
+DROP TABLE IF EXISTS `attendantm`;
+CREATE TABLE `attendantm`  (
+  `attendantm_id` int(11) NOT NULL AUTO_INCREMENT,
+  `attendantm_name` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  PRIMARY KEY (`attendantm_id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 3 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of attendantm
+-- ----------------------------
+INSERT INTO `attendantm` VALUES (1, '老六');
+INSERT INTO `attendantm` VALUES (2, '周八');
+
+-- ----------------------------
+-- Table structure for bar
+-- ----------------------------
+DROP TABLE IF EXISTS `bar`;
+CREATE TABLE `bar`  (
+  `bar_id` int(11) NOT NULL AUTO_INCREMENT,
+  `bar_cir` varchar(2) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  PRIMARY KEY (`bar_id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of bar
+-- ----------------------------
+INSERT INTO `bar` VALUES (1, '借书');
+INSERT INTO `bar` VALUES (2, '还书');
+
+-- ----------------------------
+-- Table structure for book
+-- ----------------------------
+DROP TABLE IF EXISTS `book`;
+CREATE TABLE `book`  (
+  `book_id` int(11) NOT NULL AUTO_INCREMENT,
+  `type_id` int(11) NULL DEFAULT NULL,
+  `book_name` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  `"author-_name"` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  `bpis_time` datetime NOT NULL,
+  `floor` int(11) NOT NULL,
+  `price` decimal(3, 0) NOT NULL,
+  PRIMARY KEY (`book_id`) USING BTREE,
+  INDEX `FK_Relationship_3`(`type_id`) USING BTREE,
+  CONSTRAINT `FK_Relationship_3` FOREIGN KEY (`type_id`) REFERENCES `classifym` (`type_id`) ON DELETE RESTRICT ON UPDATE RESTRICT
+) ENGINE = InnoDB AUTO_INCREMENT = 3 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of book
+-- ----------------------------
+INSERT INTO `book` VALUES (1, 1, '斗破苍穹', '土豆', '2023-09-08 00:02:16', 1, 39);
+INSERT INTO `book` VALUES (2, 2, '鬼吹灯', '扒皮', '2023-09-22 00:03:16', 2, 40);
+
+-- ----------------------------
+-- Table structure for classifym
+-- ----------------------------
+DROP TABLE IF EXISTS `classifym`;
+CREATE TABLE `classifym`  (
+  `type_id` int(11) NOT NULL AUTO_INCREMENT,
+  `type` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  PRIMARY KEY (`type_id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of classifym
+-- ----------------------------
+INSERT INTO `classifym` VALUES (1, '玄幻');
+INSERT INTO `classifym` VALUES (2, '悬疑');
+INSERT INTO `classifym` VALUES (3, '恐怖');
+
+-- ----------------------------
+-- Table structure for consumerm
+-- ----------------------------
+DROP TABLE IF EXISTS `consumerm`;
+CREATE TABLE `consumerm`  (
+  `consumer_id` int(11) NOT NULL AUTO_INCREMENT,
+  `vip_id` int(11) NULL DEFAULT NULL,
+  `consumer_name` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  PRIMARY KEY (`consumer_id`) USING BTREE,
+  INDEX `FK_Relationship_1`(`vip_id`) USING BTREE,
+  CONSTRAINT `FK_Relationship_1` FOREIGN KEY (`vip_id`) REFERENCES `vip` (`vip_id`) ON DELETE RESTRICT ON UPDATE RESTRICT
+) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of consumerm
+-- ----------------------------
+INSERT INTO `consumerm` VALUES (1, 1, '张三');
+INSERT INTO `consumerm` VALUES (2, 2, '李四');
+INSERT INTO `consumerm` VALUES (3, 3, '王五');
+
+-- ----------------------------
+-- Table structure for sign
+-- ----------------------------
+DROP TABLE IF EXISTS `sign`;
+CREATE TABLE `sign`  (
+  `bar_id` int(11) NOT NULL,
+  `book_id` int(11) NOT NULL,
+  `consumer_id` int(11) NULL DEFAULT NULL,
+  `attendantm_id` int(11) NULL DEFAULT NULL,
+  `boar_date` datetime NOT NULL,
+  PRIMARY KEY (`bar_id`) USING BTREE,
+  INDEX `FK_Relationship_4`(`book_id`) USING BTREE,
+  INDEX `FK_Relationship_5`(`attendantm_id`) USING BTREE,
+  INDEX `FK_Relationship_6`(`consumer_id`) USING BTREE,
+  CONSTRAINT `FK_Relationship_2` FOREIGN KEY (`bar_id`) REFERENCES `bar` (`bar_id`) ON DELETE RESTRICT ON UPDATE RESTRICT,
+  CONSTRAINT `FK_Relationship_4` FOREIGN KEY (`book_id`) REFERENCES `book` (`book_id`) ON DELETE RESTRICT ON UPDATE RESTRICT,
+  CONSTRAINT `FK_Relationship_5` FOREIGN KEY (`attendantm_id`) REFERENCES `attendantm` (`attendantm_id`) ON DELETE RESTRICT ON UPDATE RESTRICT,
+  CONSTRAINT `FK_Relationship_6` FOREIGN KEY (`consumer_id`) REFERENCES `consumerm` (`consumer_id`) ON DELETE RESTRICT ON UPDATE RESTRICT
+) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of sign
+-- ----------------------------
+INSERT INTO `sign` VALUES (1, 1, 1, 1, '2023-09-16 00:04:06');
+INSERT INTO `sign` VALUES (2, 2, 2, 2, '2023-09-22 00:04:32');
+
+-- ----------------------------
+-- Table structure for vip
+-- ----------------------------
+DROP TABLE IF EXISTS `vip`;
+CREATE TABLE `vip`  (
+  `vip_id` int(11) NOT NULL AUTO_INCREMENT,
+  `vip_rank` varchar(5) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
+  `sure` int(11) NOT NULL,
+  PRIMARY KEY (`vip_id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of vip
+-- ----------------------------
+INSERT INTO `vip` VALUES (1, 'vip1', 3);
+INSERT INTO `vip` VALUES (2, 'vip2', 4);
+INSERT INTO `vip` VALUES (3, 'vip3', 5);
+
+SET FOREIGN_KEY_CHECKS = 1;
+
+select * from `sign`;
+
+```
+```
diff --git "a/56 \346\242\205\345\277\240\351\222\246/2023.09.11.png" "b/56 \346\242\205\345\277\240\351\222\246/2023.09.11.png"
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