diff --git a/数据库脚本/数据库脚本.sql b/数据库脚本/数据库脚本.sql
new file mode 100644
index 0000000..f4a78b8
--- /dev/null
+++ b/数据库脚本/数据库脚本.sql
@@ -0,0 +1,667 @@
+-- 创建数据库
+CREATE DATABASE supermarket OWNER yjw;
+
+-- 表空间
+CREATE TABLESPACE products RELATIVE LOCATION 'tablespace/products';
+CREATE TABLESPACE money RELATIVE LOCATION 'tablespace/money';
+CREATE TABLESPACE employee RELATIVE LOCATION 'tablespace/employee';
+CREATE TABLESPACE customers RELATIVE LOCATION 'tablespace/customers';
+CREATE TABLESPACE caigou RELATIVE LOCATION 'tablespace/caigou';
+
+-- 模式
+CREATE SCHEMA admin;
+CREATE SCHEMA public;
+CREATE SCHEMA purchase;
+CREATE SCHEMA sale;
+
+-- 创建序列
+CREATE SEQUENCE empID START 1 INCREMENT 1 MAXVALUE 200 CACHE 1;
+CREATE SEQUENCE productTypeID START 2001 INCREMENT 1 MAXVALUE 700 CACHE 1;
+CREATE SEQUENCE vipI START 700 INCREMENT 1 MAXVALUE 200000 CACHE 1;
+CREATE SEQUENCE productID START 200001 INCREMENT 1 MAXVALUE 2000000 CACHE 1;
+CREATE SEQUENCE inventoryID START 2000001 INCREMENT 1 MAXVALUE 3000000 CACHE 1;
+CREATE SEQUENCE supplierID START 3000001 INCREMENT 1 MAXVALUE 350000 CACHE 1;
+CREATE SEQUENCE purchaseID START 3500001 INCREMENT 1 MAXVALUE 5000000 CACHE 1;
+CREATE SEQUENCE salesPromotionID START 5000001 INCREMENT 1 MAXVALUE 6000000 CACHE 1;
+CREATE SEQUENCE salaryID START 6000001 INCREMENT 1 MAXVALUE 7000000 CACHE 1;
+CREATE SEQUENCE financialStatementID START 7000001 INCREMENT 1 MAXVALUE 8000000 CACHE 1;
+CREATE SEQUENCE sellID START 8000001 INCREMENT 1 CACHE 1;
+
+-- 创建表
+-- 员工表：
+CREATE TABLE admin.employees (
+emp_id INT PRIMARY KEY DEFAULT nextval('empID'),
+  emp_name VARCHAR(20) NOT NULL,
+  emp_gender CHAR(3) NOT NULL CHECK(emp_gender IN ('男','女')),
+  emp_age INT NOT NULL,
+  emp_contactInfo VARCHAR(11) NOT NULL,
+  emp_position VARCHAR(20) NOT NULL,
+  hiredate DATE NOT NULL DEFAULT CURRENT_DATE
+)TABLESPACE employee;
+
+         
+-- 商品类型表：
+CREATE TABLE sale.product_type (
+  category_id INT PRIMARY KEY DEFAULT nextval('productTypeID'),
+  category_name VARCHAR(20) NOT NULL,
+  notes TEXT DEFAULT ('')
+)TABLESPACE products;
+
+-- 商品表：
+CREATE TABLE sale.products (
+  product_id INT PRIMARY KEY DEFAULT nextval('productID'),
+  product_name VARCHAR(40) NOT NULL,
+  category_id INT REFERENCES product_type(category_id),
+  brand VARCHAR(20) NOT NULL DEFAULT '',
+  purchase_price DECIMAL(10, 2) NOT NULL,
+  selling_price DECIMAL(10, 2) NOT NULL,
+  member_price DECIMAL(10, 2) NOT NUL,
+  stock_quantity FLOAT NOT NULL CHECK (stock_quantity >= 0)
+)TABLESPACE products;
+
+-- 会员表：
+CREATE TABLE sale.members (
+  member_id INT PRIMARY KEY DEFAULT nextval('vipID'),
+  member_name VARCHAR(20) NOT NULL,
+  member_gender CHAR(3) NOT NULL DEFAULT '男' CHECK (member_gender IN ('男', '女')),
+  member_age INT,
+  member_contactInfo VARCHAR(11) NOT NULL,
+  member_level INT NOT NULL DEFAULT 0,
+  points INT NOT NULL DEFAULT 0
+)TABLESPACE member;
+
+-- 库存表：
+CREATE TABLE public.inventory (
+  inventory_id INT PRIMARY KEY DEFAULT nextval('inventoryID'),
+  product_id INT REFERENCES products(product_id),
+  stock_quantity FLOAT NOT NULL CHECK (stock_quantity >= 0),
+  stock_upper_limit FLOAT NOT NULL CHECK (stock_upper_limit >= 0),
+  stock_lower_limit FLOAT NOT NULL CHECK (stock_lower_limit >= 0),
+  inbound_date DATE NOT NULL,
+  outbound_date DATE NOT NULL
+)TABLESPACE caigou;
+
+-- 供应商表：
+CREATE TABLE purchase.suppliers (
+  supplier_id INT PRIMARY KEY DEFAULT nextval('supplierID'),
+  supplier_name VARCHAR(20) NOT NULL,
+  supplier_contact_person_name VARCHAR(20) NOT NULL,
+  supplier_contact_info VARCHAR(11) NOT NULL,
+  supplied_product INT REFERENCES products(product_id)
+)TABLESPACE caigou;
+
+-- 促销活动表：
+CREATE TABLE sale.sale_promotion (
+  promotion_id INT PRIMARY KEY DEFAULT nextval('salesPromotionID'),
+  promotion_name VARCHAR(20) NOT NULL,
+  start_date DATE NOT NULL DEFAULT CURRENT_DATE,
+  end_date DATE NOT NULL,
+  discount_rate FLOAT NOT NULL CHECK (discount_rate > 0 AND discount_rate < 1)
+)TABLESPACE products;
+
+-- 采购订单表：
+CREATE TABLE purchase.purchase_order (
+  order_id INT PRIMARY KEY DEFAULT nextval('purchaseID'),
+  supplier_id INT NOT NULL REFERENCES suppliers(supplier_id),
+  emp_id INT NOT NULL REFERENCES employees(emp_id),
+  product_id INT NOT NULL REFERENCES products(product_id),
+  order_date DATE NOT NULL DEFAULT CURRENT_DATE,
+  estimated_delivery_date DATE NOT NULL,
+  total_price DECIMAL(10, 2) NOT NULL CHECK (total_price > 0),
+  order_status VARCHAR(5) NOT NULL,
+  product_quantity FLOAT NOT NULL CHECK (product_quantity > 0)
+)TABLESPACE caigou;
+
+-- 工资表：
+CREATE TABLE public.salaries (
+  salary_id INT PRIMARY KEY DEFAULT nextval('salaryID'),
+  emp_id INT NOT NULL REFERENCES employees(emp_id),
+  basic_salary DECIMAL(10, 2) NOT NULL CHECK (basic_salary > 0),
+  performance_salary DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  bonus DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  deduction DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  actual_salary DECIMAL(10, 2) NOT NULL,
+  payment_date DATE NOT NULL
+)TABLESPACE employee;
+
+-- 财务报表：
+CREATE TABLE admin.financial_reports (
+  report_id INT PRIMARY KEY DEFAULT nextval('financialStatementID'),
+  sales_revenue DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  procurement_cost DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  emp_wage_cost DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  rent_and_utilities DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  net_profit DECIMAL(10, 2) NOT NULL DEFAULT 0,
+  report_start_date DATE NOT NULL,
+  report_end_date DATE NOT NULL CHECK (report_start_date < report_end_date)
+)TABLESPACE money;
+
+-- 商品促销表：
+CREATE TABLE sale.product_promotion (
+  promotion_id INT,
+  product_id INT,
+  discount_rate FLOAT NOT NULL CHECK (discount_rate > 0 AND discount_rate < 1),
+  PRIMARY KEY (promotion_id, product_id),
+  FOREIGN KEY (promotion_id) REFERENCES sale_promotion(promotion_id),
+  FOREIGN KEY (product_id) REFERENCES products(product_id)
+)TABLESPACE products;
+
+-- 销售记录表：
+CREATE TABLE sale.sales (
+  sale_id INT DEFAULT nextval('sellID'),
+  emp_id INT,
+  product_id INT,
+  member_id INT,
+  sale_quantity FLOAT NOT NULL CHECK (sale_quantity > 0),
+  sale_time DATE NOT NULL DEFAULT CURRENT_DATE,
+  PRIMARY KEY (sale_id, emp_id, product_id, member_id),
+  FOREIGN KEY (emp_id) REFERENCES employees(emp_id),
+  FOREIGN KEY (product_id) REFERENCES products(product_id),
+  FOREIGN KEY (member_id) REFERENCES members(member_id)
+)TABLESPACE money;
+
+
+-- 数据初始化脚本
+-- 员工表初始化：
+INSERT INTO admin.employees (emp_name, emp_age, emp_gender, emp_contactinfo, emp_position, password) VALUES 
+('喻佳文', 20, '男', 18702616716, '管理员', 'admin'),
+('吴天宇', 20, '男', 18702616716, '售货员', '123456'),
+('test', 20, '男', 18702616716, '管理员', '123456'),
+('Bob', 30, '男', 12345678912, '采购员', '123456'), 
+('Alice', 20, '女', 12345678912, '采购员', '123456'), 
+('Mark', 33, '男', 12345678912, '售货员', '123456'),
+('嵙嵙', 18, '男', 12345678912, '售货员', '123456'),
+('张三', 30, '男', 12345678912, '售货员', '123456'), 
+('李四', 20, '女', 12345678912, '采购员', '123456'), 
+('王五', 33, '男', 12345678912, '售货员', '123456');
+-- 工资表初始化：
+INSERT INTO public.salaries (emp_id, basic_salary, performance_salary, bonus, deduction, payment_date) VALUES
+(8, 6455.96, 187.16, 65.53, 558.94, TO_DATE('2024-03-10 17:22:39', 'YYYY-MM-DD HH24:MI:SS')),
+(10, 5623.29, 305.80, 764.70, 988.92, TO_DATE('2023-04-15 16:50:22', 'YYYY-MM-DD HH24:MI:SS')),
+(5, 8750.76, 137.45, 448.72, 955.63, TO_DATE('2024-02-25 10:58:13', 'YYYY-MM-DD HH24:MI:SS')),
+(7, 5747.54, 382.15, 863.73, 675.80, TO_DATE('2022-12-07 17:29:09', 'YYYY-MM-DD HH24:MI:SS')),
+(9, 7717.88, 853.36, 883.65, 831.46, TO_DATE('2023-08-05 09:26:51', 'YYYY-MM-DD HH24:MI:SS')),
+(3, 6080.88, 244.53, 881.90, 543.34, TO_DATE('2024-08-28 13:33:40', 'YYYY-MM-DD HH24:MI:SS')),
+(5, 8886.48, 403.13, 317.58, 993.22, TO_DATE('2024-12-06 14:01:44', 'YYYY-MM-DD HH24:MI:SS')),
+(3, 9328.66, 359.43, 574.67, 496.32, TO_DATE('2024-02-08 17:54:40', 'YYYY-MM-DD HH24:MI:SS')),
+(4, 9275.54, 447.25, 357.84, 463.25, TO_DATE('2023-12-17 15:39:34', 'YYYY-MM-DD HH24:MI:SS')),
+(1, 7864.91, 304.06, 709.95, 248.94, TO_DATE('2023-11-10 12:40:41', 'YYYY-MM-DD HH24:MI:SS'));
+
+-- 商品类型表初始化：
+INSERT INTO sale.product_type ( category_name, notes )
+VALUES
+  ( '食品', '需冷藏' ),
+  ( '日用品', '易碎品小心存放' ),
+  ( '饮料', '注意保质期' ),
+  ( '文具', '防潮' ),
+  ( '玩具', '注意安全' ),
+  ( '电器', '防潮防尘' ),
+  ( '服装', '注意洗涤方式' ),
+  ( '书籍', '防潮防虫' ),
+  ( '化妆品', '注意保质期' ),
+  ( '数码产品', '不能接触水' );
+
+-- 商品表初始化：
+INSERT INTO sale.products ( product_name, category_id, brand, purchase_price, selling_price, member_price, stock_quantity )
+VALUES
+  ('牛奶',2003,'蒙牛',21.00,35.00,32.00,0),
+  ('洗发水',2009,'清扬',11.00,23.00,20.00,0),
+  ('饼干',2001,'徐福记',20.00,33.00,30.00,0),
+  ('三体',2008,'人民文学出版社',40.00,55.00,50.00,0),
+  ('遥控汽车',2005,'顽皮龙',33.00,45.00,40.00,0),
+  ('男士短袖',2007,'李宁',45.00,60.00,57.00,0),
+  ('照相机',2010,'尼康',3000.00,3400.00,3379.00,0),
+  ('签字笔',2004,'晨光',3.00,8.00,6.00,0),
+  ('空调',2006,'格力',1999.00,2500.00,2399.00,0),
+  ('牙刷',2002,'小鹿妈妈',9.00,14.00,12.00,0);
+
+-- 商品促销表初始化：
+INSERT INTO sale.product_promotion ( promotion_id, product_id )
+VALUES
+  (5000001,200001),
+  (5000001,200002),
+  (5000001,200003),
+  (5000001,200004),
+  (5000001,200005),
+  (5000002,200003),
+  (5000005,200005),
+  (5000002,200007),
+  (5000002,200006),
+  (5000002,200004);
+
+-- 会员表初始化：
+INSERT INTO sale.members ( member_name, member_gender, member_age, member_contactinfo, member_level, points )
+VALUES
+  ('会员1','男', 20, '13670000000', 2, 200),
+  ('会员2','男', 20, '13670000000', 1, 100),
+  ('会员3','女', 20, '13670000000', 2, 200),
+  ('会员4','男', 20, '13670000000', 3, 300),
+  ('会员5','女', 20, '13670000000', 1, 20),
+  ('会员6','男', 20, '13670000000', 2, 210),
+  ('会员7','女', 20, '13670000000', 2, 290),
+  ('会员8','男', 20, '13670000000', 2, 260),
+  ('会员9','男', 20, '13670000000', 2, 223),
+  ('会员10','男', 20, '13670000000', 2, 212);
+
+-- 促销活动表初始化：
+INSERT INTO sale.sale_promotion ( promotion_name, start_date, end_date, discount_rate )
+VALUES
+  ('双十一大促','2024-10-24','2024-11-11',0.88),
+  ('双十二大促','2024-11-24','2024-12-12',0.88),
+  ('年末大促','2024-12-24','2025-01-01',0.88),
+  ('促销活动4','2024-10-24','2024-11-11',0.88),
+  ('促销活动5','2024-10-24','2024-11-11',0.88),
+  ('促销活动6','2024-10-24','2024-11-11',0.88),
+  ('促销活动7','2024-10-24','2024-11-11',0.88),
+  ('促销活动8','2024-10-24','2024-11-11',0.88),
+  ('促销活动9','2024-10-24','2024-11-11',0.88),
+  ('促销活动10','2024-10-24','2024-11-11',0.88);
+
+-- 供应商表初始化：
+INSERT INTO purchase.suppliers ( supplier_name, supplier_contact_person_name, supplier_contact_info, supplied_product )
+VALUES
+  ('供应商A','联系人A','13500000000',200001),
+  ('供应商B','联系人B','13500000000',200002),
+  ('供应商C','联系人C','13500000000',200003),
+  ('供应商D','联系人D','13500000000',200004),
+  ('供应商E','联系人E','13500000000',200005),
+  ('供应商F','联系人F','13500000000',200006),
+  ('供应商G','联系人G','13500000000',200007),
+  ('供应商H','联系人H','13500000000',200008),
+  ('供应商I','联系人I','13500000000',200009),
+  ('供应商J','联系人J','13500000000',200010);
+
+-- 库存表初始化：
+INSERT INTO PUBLIC.inventory ( product_id, stock_quantity, stock_upper_limit, stock_lower_limit, inbound_date, outbound_date )
+VALUES
+  ( 200001, 250, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200002, 350, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200003, 340, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200004, 150, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200005, 350, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200006, 150, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200007, 220, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200008, 100, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200009, 250, 1000, 25, '2024-11-29', '2024-12-10'),
+  ( 200010, 250, 1000, 25, '2024-11-29', '2024-12-10');
+
+-- 采购订单表初始化：
+INSERT INTO purchase.purchase_order ( supplier_id, emp_id, product_id, order_date, estimated_delivery_date, total_price, order_status, product_quantity )
+VALUES
+  ( 3000001, 4, 200001, '2024-12-01','2024-12-30', 2000, '未到货', 100),
+  ( 3000002, 5, 200002, '2024-12-01','2024-12-30', 5500, '未到货', 100),
+  ( 3000003, 9, 200003, '2024-12-01','2024-12-30', 2099, '已到货', 100),
+  ( 3000004, 9, 200004, '2024-12-01','2024-12-30', 2000, '未到货', 100),
+  ( 3000005, 4, 200005, '2024-12-01','2024-12-30', 1980, '未到货', 100),
+  ( 3000006, 5, 200006, '2024-12-01','2024-12-30', 1900, '已到货', 100),
+  ( 3000007, 5, 200007, '2024-12-01','2024-12-30', 3300, '未到货', 100),
+  ( 3000008, 9, 200008, '2024-12-01','2024-12-30', 3000, '未到货', 100),
+  ( 3000009, 4, 200009, '2024-12-01','2024-12-30', 1200, '未到货', 100),
+  ( 3000010, 4, 200010, '2024-12-01','2024-12-30', 3200, '未到货', 100);
+
+-- 财务报表表初始化：
+INSERT INTO admin.financial_reports ( sales_revenue, procurement_cost, emp_wage_cost, rent_and_utilities, report_start_date , report_end_date)
+VALUES
+  ( 120000, 5000, 15000, 5000, '2021-01-01', '2021-03-31'),
+  ( 156000, 6600, 15600, 5000, '2021-04-01', '2021-06-30'),
+  ( 119000, 4000, 14000, 5000, '2021-07-01', '2021-09-30'),
+  ( 170000, 5000, 20300, 5000, '2021-10-01', '2021-12-31'),
+  ( 120000, 5000, 15000, 5000, '2022-01-01', '2022-03-31'),
+  ( 156000, 6600, 15600, 5000, '2022-04-01', '2022-06-30'),
+  ( 119000, 4000, 14000, 5000, '2022-07-01', '2022-09-30'),
+  ( 170000, 5000, 20300, 5000, '2022-10-01', '2022-12-31'),
+  ( 120000, 5000, 15000, 5000, '2023-01-01', '2023-03-31'),
+  ( 156000, 6600, 15600, 5000, '2023-04-01', '2023-06-30'),
+  ( 119000, 4000, 14000, 5000, '2023-07-01', '2023-09-30'),
+  ( 170000, 5000, 20300, 5000, '2023-10-01', '2023-12-31');
+
+-- 销售记录表初始化：
+INSERT INTO sale.sales ( emp_id, product_id, member_id, sale_quantity )
+VALUES
+      ( 2, 200001, 7001, 3),
+      ( 7, 200002, NULL, 1),
+      ( 5, 200003, 7002, 3),
+      ( 8, 200004, 7005, 4),
+      ( 2, 200005, 7007, 7),
+      ( 8, 200006, 7001, 2),
+      ( 8, 200007, NULL, 4),
+      ( 6, 200004, 7005, 6),
+      ( 2, 200003, 7003, 1),
+      ( 7, 200001, 7009, 3);
+
+-- 业务查询及查询脚本
+-- 比较条件查询
+-- 1.	查询需求：查询所有工资高于3500的员工
+    SELECT * FROM public.salaries WHERE actual_salary > 3500;
+-- 2.	查询需求：查询所有库存数量低于50的商品。
+    SELECT * FROM PUBLIC.inventory WHERE stock_quantity < 50;
+-- 3.	查询需求：查询所有进价大于20的商品。
+SELECT * FROM sale.products WHERE purchase_price > 20;
+
+-- 集合比较查询
+-- 1.	查询需求：查询在商品表中存在但是在销售记录表中不存在的商品编号及名称。
+    SELECT product_id,product_name FROM sale.products
+WHERE product_id NOT IN (SELECT product_id FROM sale.sales);
+-- 2.	查询需求：查询在商品表中存在同时在商品促销表中也存在的商品编号及名称。
+SELECT product_id,product_name FROM sale.products
+WHERE product_id IN (SELECT product_id FROM sale.product_promotion);
+-- 范围比较查询
+-- 1.	查询需求：查询所有库存上限在100至200之间的商品。
+SELECT * FROM PUBLIC.inventory WHERE stock_upper_limit BETWEEN 100 AND 200;
+-- 2.	查询需求：查询所有在2024年1月至2024年12月期间有促销活动。
+SELECT * FROM sale.sale_promotion WHERE start_date BETWEEN '2024-01-01' AND '2024-12-30';
+-- 3.	查询需求：查询所有售价在20至50之间的商品。
+SELECT * FROM sale.products WHERE selling_price BETWEEN 20 AND 50;
+
+-- 字符串相似比较查询
+-- 1.查询需求：查询所有名字中包含“文”的员工。
+SELECT * FROM admin.employees WHERE emp_name LIKE '%文%';
+-- 2.查询需求：查询所有品牌名称中包含“牛”的商品
+SELECT * FROM sale.products WHERE brand LIKE '%牛%';
+-- 3.查询需求：查询供应商名称为“供应商A”的供应的商品。
+SELECT p.product_name 
+FROM purchase.suppliers s
+JOIN sale.products p ON s.supplied_product = p.product_id
+WHERE s.supplier_name = '供应商A';
+
+-- 多表连接查询
+-- 1.查询需求：查询每个员工的工资和基本信息。
+SELECT e.emp_name, s.basic_salary, s.performance_salary, s.bonus, s.deduction, s.actual_salary
+FROM admin.employees e
+JOIN public.salaries s ON e.emp_id = s.emp_id;
+-- 2.查询需求：查询每个供应商的供应商品信息。
+SELECT s.supplier_name, p.product_name
+FROM purchase.suppliers s
+JOIN sale.products p ON s.supplied_product = p.product_id;
+-- 3.查询需求：查询每种商品的库存信息和商品基本信息。
+SELECT p.product_name, i.stock_quantity, i.stock_upper_limit, i.stock_lower_limit
+FROM sale.products p
+JOIN PUBLIC.inventory i ON p.product_id = i.product_id;
+
+-- 嵌套查询
+-- 1.	查询需求：查询所有有库存的商品名称。
+SELECT product_name FROM sale.products WHERE product_id IN (SELECT product_id FROM PUBLIC.inventory);
+-- 2.查询需求：查询所有有销售记录的会员编号。
+SELECT member_id FROM sale.members WHERE member_id IN (SELECT member_id FROM sale.sales);
+-- 3.查询需求：查询所有销售过商品的员工姓名。
+SELECT emp_name FROM admin.employees WHERE emp_id IN (SELECT emp_id FROM sale.sales);
+
+-- EXISTS查询
+-- 1.	查询需求：查询所有有促销活动的商品。
+SELECT * FROM sale.products p WHERE EXISTS (SELECT 1 FROM sale.product_promotion pp WHERE pp.product_id = p.product_id);
+-- 2.	查询需求：查询所有有工资记录的员工。
+SELECT * FROM admin.employees e WHERE EXISTS (SELECT 1 FROM public.salaries s WHERE s.emp_id = e.emp_id);
+-- 3.	查询需求：查询所有有库存的商品。
+SELECT * FROM sale.products p WHERE EXISTS (SELECT 1 FROM PUBLIC.inventory i WHERE i.product_id = p.product_id);
+
+
+-- 数据更新及脚本
+-- 更新：
+-- 1.更新需求：将员工喻佳文的联系方式更新为13800000011。
+UPDATE admin.employees SET emp_contactInfo = '13800000011' WHERE emp_name = '喻佳文';
+-- 2.更新需求：将商品牛奶的售价更新为7.00。
+UPDATE sale.products SET selling_price = 7.00 WHERE product_name = '牛奶';
+-- 3.更新需求：将会员一的等级更新为2。
+UPDATE sale.members SET member_level = 2 WHERE member_name = '会员一';
+-- 4.更新需求：将库存编号为1的库存上限更新为250。
+UPDATE PUBLIC.inventory SET stock_upper_limit = 250 WHERE inventory_id = 1;
+-- 5.更新需求：将供应商A的联系人姓名更新为联系人A1。
+UPDATE purchase.suppliers SET supplier_contact_person_name = '联系人A1' WHERE supplier_name = '供应商A';
+-- 6.更新需求：将促销活动春节促销的折扣率更新为0.7。
+UPDATE sale.sale_promotion SET discount_rate = 0.7 WHERE promotion_name = '春节促销';
+-- 7.更新需求：将采购订单编号为1的订单状态更新为“未到货”。
+UPDATE purchase.purchase_order SET order_status = '未到货' WHERE order_id = 1;
+-- 8.更新需求：将员工吴天宇的基本工资更新为3200.00。
+UPDATE public.salaries SET basic_salary = 3200.00 WHERE emp_id = (SELECT emp_id FROM admin.employees WHERE emp_name = '吴天宇');
+-- 9.更新需求：将财务报表编号为1的净利润更新为6000.00。
+UPDATE admin.financial_reports SET net_profit = 6000.00 WHERE report_id = 1;
+-- 10.更新需求：将商品促销活动编号为1的折扣率更新为0.75。
+UPDATE sale.product_promotion SET discount_rate = 0.75 WHERE promotion_id = 1;
+
+-- 删除：
+-- 1.删除需求：删除员工test的记录。
+DELETE FROM admin.employees WHERE emp_name = 'test';
+-- 2.删除需求：删除商品牛奶的记录。
+DELETE FROM sale.products WHERE product_name = '牛奶';
+-- 3.删除需求：删除会员一的记录。
+DELETE FROM sale.members WHERE member_name = '会员一';
+-- 4.删除需求：删除库存编号为1的记录。
+DELETE FROM PUBLIC.inventory WHERE inventory_id = 1;
+-- 5.删除需求：删除供应商A的记录。
+DELETE FROM purchase.suppliers WHERE supplier_name = '供应商A';
+-- 6.删除需求：删除促销活动春节促销的记录。
+DELETE FROM sale.sale_promotion WHERE promotion_name = '春节促销';
+-- 7.删除需求：删除采购订单编号为1的记录。
+DELETE FROM purchase.purchase_order WHERE order_id = 1;
+-- 8.删除需求：删除员工Bob的工资记录。
+DELETE FROM public.salaries WHERE emp_id = (SELECT emp_id FROM admin.employees WHERE emp_name = 'Bob');
+-- 9.删除需求：删除财务报表编号为1的记录。
+DELETE FROM admin.financial_reports WHERE report_id = 1;
+-- 10.删除需求：删除商品促销活动编号为2的记录。
+DELETE FROM sale.product_promotion WHERE promotion_id = 2;
+
+-- 视图创建脚本：
+-- 1.视图：员工工资详情
+CREATE VIEW view_employee_salary AS
+SELECT e.emp_name, s.basic_salary, s.performance_salary, s.bonus, s.deduction, s.actual_salary
+FROM admin.employees e
+JOIN public.salaries s ON e.emp_id = s.emp_id;
+-- 2.	视图：商品库存详情
+CREATE VIEW view_product_inventory AS
+SELECT p.product_name, i.stock_quantity, i.stock_upper_limit, i.stock_lower_limit
+FROM sale.products p
+JOIN PUBLIC.inventory i ON p.product_id = i.product_id;
+
+-- 3.	视图：促销活动商品
+CREATE VIEW view_promotion_products AS
+SELECT pp.promotion_id, p.product_name, pp.discount_rate
+FROM sale.product_promotion pp
+JOIN sale.products p ON pp.product_id = p.product_id;
+-- 4.	视图：销售记录详情
+CREATE VIEW view_sales_details AS
+SELECT s.sale_id, e.emp_name, p.product_name, m.member_name, s.sale_quantity, s.sale_time
+FROM sale.sales s
+JOIN admin.employees e ON s.emp_id = e.emp_id
+JOIN sale.products p ON s.product_id = p.product_id
+JOIN sale.members m ON s.member_id = m.member_id;
+
+-- 5.视图：供应商商品信息
+CREATE VIEW view_supplier_products AS
+SELECT s.supplier_name, p.product_name
+FROM purchase.suppliers s
+JOIN sale.products p ON s.supplied_product = p.product_id;
+
+-- 索引创建脚本：
+CREATE INDEX idx_emp_name ON employees (emp_name);-- （可能经常需要根据员工名字查找员工信息，建立索引提高查找效率）
+CREATE INDEX idx_member_contactInfo ON members (member_contactInfo);-- （可能经常需要根据会员的联系方式查找对应的会员，如在结账时根据手机号码查找会员信息，建立索引提高查找效率）
+CREATE INDEX idx_member_name ON members (member_name);-- （也可能经常需要根据会员的姓名找对应的会员，建立索引提高查找效率）
+CREATE INDEX idx_category_name ON product_type (category_name);-- （可能经常需要根据商品类别的名称查找相应的商品类别信息，建立索引提高查找效率）
+CREATE INDEX idx_product_name ON products (product_name);-- （可能经常需要根据商品名称查找对应的商品信息，建立索引提高查找效率）
+CREATE INDEX idx_emp_id ON salaries (emp_id);-- （可能经常需要根据员工的编号查找相应的工资信息，建立索引提高查找效率）
+CREATE INDEX idx_supplied_product ON suppliers (supplied_product);-- （可能经常需要根据供应商供应的商品查找相应的供应商信息，建立索引提高查找效率）
+
+-- 存储过程创建脚本：
+-- 1、添加新员工
+CREATE OR REPLACE PROCEDURE sp_add_employee(
+    IN emp_name VARCHAR(20),
+    IN emp_gender VARCHAR(3),
+    IN emp_age INT,
+    IN emp_contactinfo VARCHAR(11),
+    IN emp_position VARCHAR(20),
+    IN hiredate DATE,
+    IN password VARCHAR(20),
+    OUT new_emp_id INT
+)
+IS
+BEGIN
+    INSERT INTO admin.employees (emp_name, emp_gender, emp_age, emp_contact, emp_position, hiredate,password)
+    VALUES (emp_name, emp_gender, emp_age, emp_contactinfo, emp_position, hiredate, password)
+    RETURNING emp_id INTO new_emp_id;
+END;
+-- 2、更新商品库存
+CREATE OR REPLACE PROCEDURE sp_update_inventory(
+    IN inv_id INT,
+    IN new_quantity INT
+)
+IS 
+BEGIN
+    UPDATE public.inventory
+    SET stock_quantity = new_quantity
+    WHERE inventory_id = inv_id;
+END;
+-- 3、添加销售记录
+CREATE OR REPLACE PROCEDURE add_sales_record(
+    IN p_emp_id INT,
+    IN p_member_id INT,
+    IN p_product_id INT,
+    IN p_sale_id INT,
+    IN p_sale_money DECIMAL(10, 2),
+    IN p_sale_quantity FLOAT,
+    IN p_sale_time TIMESTAMP
+)
+IS
+BEGIN
+    INSERT INTO sale.sales (emp_id, member_id, product_id, sale_id, sale_money, sale_quantity, sale_time)
+    VALUES (p_emp_id, p_member_id, p_product_id, p_sale_id, p_sale_money, p_sale_quantity, p_sale_time);
+END;
+-- 4、添加新供应商
+CREATE OR REPLACE PROCEDURE sp_add_supplier(
+    IN supplier_name VARCHAR(20),
+    IN contact_name VARCHAR(20),
+    IN contact_info VARCHAR(20),
+    IN supply_product VARCHAR(20),
+    OUT new_supplier_id INT
+)
+IS
+BEGIN
+    INSERT INTO purchase.suppliers (supplier_name, supplier_contact_person_name, supplier_contact_info, supplied_product)
+    VALUES (supplier_name, contact_name, contact_info, supply_product)
+    RETURNING supplier_id INTO new_supplier_id;
+END;
+-- 5、更新会员信息
+CREATE OR REPLACE PROCEDURE sp_update_member(
+    IN p_member_id INT,
+    IN p_member_name VARCHAR(20),
+    IN p_member_gender VARCHAR(10),
+    IN p_member_age INT,
+    IN p_member_contact VARCHAR(20),
+    IN p_new_level INT,
+    IN p_new_points INT
+)
+AS
+BEGIN
+    UPDATE sale.members
+    SET member_name = p_member_name, member_gender = p_member_gender, member_age = p_member_age, member_contactInfo = p_member_contact, member_level = p_new_level, points = p_new_points
+    WHERE member_id = p_member_id;
+END;
+-- 触发器创建脚本：
+-- 1、计算净利润触发器
+CREATE 
+  OR REPLACE FUNCTION calculate_net_profit ( ) RETURNS TRIGGER AS $$ BEGIN
+    NEW.net_profit := NEW.sales_revenue - NEW.procurement_cost - NEW.emp_wage_cost - NEW.rent_and_utilities;
+  RETURN NEW;
+  
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER trg_calculate_net_profit BEFORE INSERT ON ADMIN.financial_reports FOR EACH ROW
+EXECUTE PROCEDURE calculate_net_profit ( );
+
+-- 2、更新商品库存触发器
+CREATE 
+	OR REPLACE FUNCTION update_stock_quantity ( ) RETURNS TRIGGER AS $$ BEGIN
+		EXECUTE'UPDATE sale.products
+    SET stock_quantity = stock_quantity + $1
+    WHERE product_id = $2' USING NEW.stock_quantity,
+		NEW.product_id;
+	RETURN NEW;
+	
+END;
+$$ LANGUAGE plpgsql;
+CREATE TRIGGER trg_update_stock_quantity BEFORE INSERT ON inventory FOR EACH ROW
+EXECUTE PROCEDURE update_stock_quantity ( );
+
+-- 3、设置商品促销折扣率触发器
+CREATE 
+  OR REPLACE FUNCTION update_discount_rate ( ) RETURNS TRIGGER AS $$ BEGIN
+  SELECT
+    discount_rate INTO NEW.discount_rate 
+  FROM
+    sale_promotion 
+  WHERE
+    promotion_id = NEW.promotion_id;
+  RETURN NEW;
+  
+END;
+$$ LANGUAGE plpgsql;
+CREATE TRIGGER trg_update_discount_rate BEFORE INSERT ON product_promotion FOR EACH ROW
+EXECUTE PROCEDURE update_discount_rate ( );
+
+-- 4、销售时计算总价触发器
+CREATE 
+  OR REPLACE FUNCTION update_sale_money ( ) RETURNS TRIGGER AS $$ DECLARE
+  price NUMERIC;
+BEGIN
+  IF
+    NEW.member_id IS NULL THEN
+    SELECT
+      selling_price INTO price 
+    FROM
+      sale.products 
+    WHERE
+      product_id = NEW.product_id;
+    ELSE SELECT
+      member_price INTO price 
+    FROM
+      sale.products 
+    WHERE
+      product_id = NEW.product_id;
+    
+  END IF;
+
+  NEW.sale_money := price * NEW.sale_quantity;
+  RETURN NEW;
+  
+END;
+$$ LANGUAGE plpgsql;
+CREATE TRIGGER trg_update_sale_money BEFORE INSERT ON sale.sales FOR EACH ROW
+EXECUTE PROCEDURE update_sale_money ( );
+
+-- 5、计算员工工资触发器
+CREATE 
+  OR REPLACE FUNCTION calculate_actual_salary ( ) RETURNS TRIGGER AS $$ BEGIN
+    NEW.actual_salary := NEW.basic_salary + NEW.performance_salary + NEW.bonus - NEW.deduction;
+  RETURN NEW;
+  
+END;
+$$ LANGUAGE plpgsql;
+CREATE TRIGGER before_insert_salaries BEFORE INSERT ON salaries FOR EACH ROW
+EXECUTE PROCEDURE calculate_actual_salary ( );
+
+
+-- 1、创建管理员角色
+CREATE ROLE admin IDENTIFIED BY 'admin@123';
+-- 2、创建采购员角色
+CREATE ROLE purchaser IDENTIFIED BY 'purchaser@123'
+-- 3、创建售货员角色
+CREATE ROLE salesperson IDENTIFIED BY 'sale@123'
+-- 授予权限
+-- 1、授予管理员所有权限
+GRANT ALL PRIVILEGES ON DATABASE supermarket TO admin;
+
+-- 2、授予采购员权限
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE inventory TO purchaser;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE salaries TO purchaser;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.product_type TO purchaser;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.products TO purchaser;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE purchase.purchase_order TO purchaser;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE purchase.suppliers TO purchaser;
+-- 3、授予售货员权限
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE inventory TO salesperson;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE salaries TO salesperson;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.members TO salesperson;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.product_promotion TO salesperson;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.product_type TO salesperson;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.products TO salesperson;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.sale_promotion TO salesperson;
+GRANT SELECT, INSERT, UPDATE, DELETE ON TABLE sale.sales TO salesperson;