数据库课程设计金融数据库设计与实现

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数据库课程设计

文章目录

1.E-R图

2.E-R图转换为关系模式

样式说明：外码，主码

2.1 实体集的处理

普通实体集转换为关系模式：

  • 支行 (支行ID,支行名称,系统密码,城市,街道);
  • 理财经理 (工号,姓名,系统密码,身份证号,电话,邮箱);
  • 贷款 (贷款号,贷款金额,贷款日期,还款日期);
  • 账户 (账号,金额)

一般化/特殊化实体集的处理:

由于所有一般化/特殊化实体集均为全部特殊化，且不相交，采取只将每个最低层实体集转化为关系模式

  • 个人客户 (个人客户ID,客户密码,姓名,身份证号,邮箱,手机号码);
  • 企业客户 (企业客户ID,客户密码,企业名称,企业法人,注册地址,营业执照号);
  • 信用卡 (信用卡号,支付密码,透支额度,剩余额度);
  • 结算卡 (结算卡号,支付密码,上限金额,剩余金额);
  • 保险 (保险名称,保险编号,保险价格,适用人群,保险年限,保障项目);
  • 基金 (基金名称,基金编号,基金类型,基金价格,风险等级,基金管理者);

2.2 联系集的处理

一对多联系：

  • 客户-账户(账号,客户ID)；
  • 支行-理财经理 (支行ID,工号);
  • 支行-账户 (账号支行ID);
  • 支行-贷款 (贷款号,支行ID);
  • 客户-贷款 (贷款号,客户ID);
  • 理财经理-客户(工号,客户ID);
  • 个人客户- 信用卡(个人客户ID,信用卡号);
  • 企业客户-结算卡 (企业客户ID,结算卡号);

多对多联系：

  • 购买 (客户ID,产品编号,购买份额);

2.3 整理合并

  • 支行 (支行ID,支行名称,系统密码,城市,街道);
  • 理财经理 (工号,姓名,系统密码,身份证号,电话,邮箱，工作银行ID);
  • 贷款 (贷款号,贷款金额,贷款日期,还款日期,放贷银行ID,贷款客户ID);
  • 账户 (账号,金额,开户行ID,客户ID)
  • 个人客户 (个人客户ID,客户密码,姓名,身份证号,邮箱,手机号码,理财经理工号);
  • 企业客户 (企业客户ID,客户密码,企业名称,企业法人,注册地址,营业执照号,理财经理工号);
  • 信用卡 (信用卡号,支付密码,透支额度,剩余额度,个人客户ID);
  • 结算卡 (结算卡号,支付密码,上限金额,剩余金额,企业客户ID);
  • 保险 (保险名称,保险编号,保险金额,适用人群,保险年限,保障项目);
  • 基金 (基金名称,基金编号,基金类型,基金金额,风险等级,基金管理者);
  • 存取 (客户ID,账号,存取金额,存取日期,存/取);(注：客户ID多态关联)
  • 购买基金 (客户ID,基金产品编号,购买份额);
  • 购买保险 (客户ID,保险产品编号,购买数量);

3.数据模型

3.1对象及属性对应的编号

  • Branch (branch_ID, branch_name, system_password, city, street);
  • Manager (work_number, name, system_password, ID_number, telephone, email, branch_ID);
  • Loan (loan_no,loan_amount,loan_date, repayment_date, branch_ID, customer_ID);
  • Account (account_no, account_amount, branch_ID,Customer_ID);
  • PersonalCustomer(PersonalCustomer_ID,system_password,name, ID_number,email, telephone,work_number);
  • EnterpriseCustomer (EnterpriseCustomer_ID,system_password, name, legal_person, address, business_number,work_number);
  • CreditCard (CreditCard_no, payment_password, count_limit, remain, PersonalCustomer_ID);
  • SettlementCard (SettlementCard_no, payment_password, count_limit ,remain ,EnterpriseCustomer_ID);
  • Fund(f_name,f_id，f_type，f_amount，risk_level，f_manager);
  • Insurance(i_name，i_id，i_amount，i_person，i_year，i_project);
  • Access (Customer_ID，account_no，count，access_date，state);
  • Buy_F (Customer_ID,f_id,count);
  • Buy_I (Customer_ID,i_id,count);

3.2 数据项说明

3.2.1 Branch(支行)表

  • Branch (branch_ID, branch_name, system_password, city, street);
  • 支行 (支行ID,支行名称,系统密码,城市,街道);
表3.1 Branch(支行)表
字段名称字段类型约束说明
branch_IDVARCHAR(20)PRIMARY KEY支行ID
branch_nameVARCHAR(100)UNIQUE支行名称
system_passwordVARCHAR(20)系统密码
cityVARCHAR(100)城市
streetVARCHAR(100)街道

3.2.2 Manager(理财经理)表

  • Manager (work_number, name, system_password, ID_number, telephone, email, branch_ID);
  • 理财经理 (工号,姓名,系统密码,身份证号,电话,邮箱，工作银行ID);
字段名称字段类型约束说明
work_numberVARCHAR(20)PRIMARY KEY工号
nameVARCHAR(20)NOT NULL姓名
system_passwordVARCHAR(20)NOT NULL系统密码
ID_numberVARCHAR(20)UNIQUE身份证号
telephoneVARCHAR(20)电话
emailVARCHAR(50)邮箱
branch_IDVARCHAR(20)FOREIGN KEY工作银行ID

3.2.3 Loan(贷款)表

  • Loan (loan_no,loan_amount,loan_date, repayment_date, branch_ID, customer_ID);
  • 贷款 (贷款号,贷款金额,贷款日期,还款日期,放贷银行ID,贷款客户ID);
字段名称字段类型约束说明
loan_noVARCHAR(20)PRIMARY KEY贷款号
loan_amountDOUBLE PRECISIONNOT NULL贷款金额
loan_dateDATENOT NULL贷款日期
repayment_dateDATENOT NULL还款日期
branch_IDVARCHAR(20)FOREIGN KEY放贷银行ID
customer_IDVARCHAR(20)FOREIGN KEY贷款客户ID

3.2.4 Account(账户)表

  • Account (account_no, account_amount, branch_ID,Customer_ID);
  • 账户 (账号,金额,开户行ID,客户ID);
字段名称字段类型约束说明
account_noVARCHAR(20)PRIMARY KEY账号
account_amountDOUBLE PRECISIONNOT NULL金额
branch_IDVARCHAR(20)FOREIGN KEY开户行ID
Customer_IDVARCHAR(20)FOREIGN KEY客户ID

3.2.5 PersonalCustomer(个人客户)表

  • PersonalCustomer(PersonalCustomer_ID,system_password,name, ID_number,email, telephone,work_number);

  • 个人客户 (个人客户ID,客户密码,姓名,身份证号,邮箱,手机号码,理财经理工号);

字段名称字段类型约束说明
PersonalCustomer_IDVARCHAR(20)PRIMARY KEY个人客户ID
system_passwordVARCHAR(20)NOT NULL客户密码
nameVARCHAR(20)NOT NULL姓名
ID_numberVARCHAR(20)UNIQUE身份证号
emailVARCHAR(50)邮箱
telephoneVARCHAR(20)手机号码
work_numberVARCHAR(20)FOREIGN KEY理财经理工号

3.2.6 EnterpriseCustomer(企业客户)表

  • EnterpriseCustomer (EnterpriseCustomer_ID,system_password, name, legal_person, address, business_number,work_number);
  • 企业客户 (企业客户ID,客户密码,企业名称,企业法人,注册地址,营业执照号，理财经理工号);
字段名称字段类型约束说明
EnterpriseCustomer_IDVARCHAR(20)PRIMARY KEY企业客户ID
system_passwordVARCHAR(20)NOT NULL客户密码
nameVARCHAR(20)NOT NULL企业名称
legal_personVARCHAR(20)企业法人
addressVARCHAR(100)注册地址
business_numberVARCHAR(20)营业执照
work_numberVARCHAR(20)FOREIGN KEY理财经理工号

3.2.7 CreditCard(信用卡)表

  • CreditCard (CreditCard_no, payment_password, count_limit, remain, PersonalCustomer_ID);
  • 信用卡 (信用卡号,支付密码,透支额度,剩余额度,个人客户ID);
字段名称字段类型约束说明
CreditCard_noVARCHAR(20)PRIMARY KEY信用卡号
payment_passwordVARCHAR(20)NOT NULL支付密码
count_limitDOUBLE PRECISIONCHECK透支额度
remainDOUBLE PRECISIONCHECK剩余额度
PersonalCustomer_IDVARCHAR(20)FOREIGN KEY个人客户ID

3.2.8 SettlementCard(结算卡)表

  • SettlementCard (SettlementCard_no, payment_password, count_limit ,remain ,EnterpriseCustomer_ID);
  • 结算卡 (结算卡号,支付密码,上限金额,剩余金额,企业客户ID);
字段名称字段类型约束说明
SettlementCard_noVARCHAR(20)PRIMARY KEY结算卡号
payment_passwordVARCHAR(20)NOT NULL支付密码
count_limitDOUBLE PRECISIONCHECK上限金额
remainDOUBLE PRECISIONCHECK剩余金额
EnterpriseCustomer_IDVARCHAR(20)FOREIGN KEY企业客户ID

3.2.9 fund(基金)表

  • Fund(f_name,f_id，f_type，f_amount，risk_level，f_manager);
  • 基金 (基金名称,基金编号,基金类型,基金金额,风险等级,基金管理者);
字段名称字段类型约束说明
f_nameVARCHAR(100)NOT NULL基金名称
f_idINTEGERPRIMARY KEY基金编号
f_typeVARCHAR(20)基金类型
f_amountINTEGER基金金额
risk_levelVARCHAR(20)NOT NULL风险等级
f_managerINTEGERNOT NULL基金管理者

3.2.10 insurance(保险)表

  • 保险 (保险名称,保险编号,保险金额,适用人群,保险年限,保障项目);
  • Insurance(i_name，i_id，i_amount，i_person，i_year，i_project);
字段名称字段类型约束说明
i_nameVARCHAR(100)NOT NULL保险名称
i_idINTEGERPRIMARY KEY保险编号
i_amountINTEGER保险金额
i_personVARCHAR(20)适用人群
i_yearINTEGER保险年限
i_projectVARCHAR(200)保障项目

3.2.11 Buy_I(购买保险)

  • Buy_I (Customer_ID,i_id,count);
  • 购买保险 (客户ID,基保险产品编号,购买数量);
字段名称字段类型约束说明
Customer_IDVARCHAR(20)PRIMARY KEY客户ID
i_idVARCHAR(20)PRIMARY KEY保险产品编号
countINTERGERNOT NULL、CHECK购买数量

3.2.12 Buy_F(购买基金)

  • Buy_F (Customer_ID,f_id,count);
  • 购买基金 (客户ID,基金产品编号,购买份额);
字段名称字段类型约束说明
Customer_IDVARCHAR(20)PRIMARY KEY客户ID
f_idVARCHAR(20)PRIMARY KEY保险产品编号
countINTERGERNOT NULL、CHECK购买份额

4.创建数据表

4.1 创建数据库

4.1.1 登录数据库

切换到omm用户，以操作系统用户omm登录数据库主节点。

su - omm

启动数据库服务

gs_om -t start

使用gsql工具登陆数据库

gsql -d postgres -p 26000 -r

4.1.2 创建金融数据库

创建数据库finance

CREATE DATABASE finance ENCODING 'UTF8' template = template0;

连接finance数据库

\\connect finance

创建名为finance的schema，并设置finance为当前的schema

CREATE SCHEMA finance;

将默认搜索路径设为finance

SET search_path TO finance;

4.2 信息表的创建

4.2.1 Branch(支行)表

  • Branch (branch_ID, branch_name, system_password, city, street);
  • 支行 (支行ID,支行名称,系统密码,城市,街道);

删除表Branch

DROP TABLE IF EXISTS finance.Branch;

创建表Branch

CREATE TABLE finance.Branch
(
	branch_ID VARCHAR(20) PRIMARY KEY ,
	branch_name VARCHAR(100) UNIQUE ,
	system_password VARCHAR(20) ,
	city VARCHAR(100) ,
	street VARCHAR(100)
);

使用命令查看Branch表详细信息： \\d+ finance.Branch

                                    Table "finance.branch"
     Column      |          Type          | Modifiers | Storage  | Stats target | Description 
-----------------+------------------------+-----------+----------+--------------+-------------
 branch_id       | character varying(20)  | not null  | extended |              | 
 branch_name     | character varying(100) |           | extended |              | 
 system_password | character varying(20)  |           | extended |              | 
 city            | character varying(100) |           | extended |              | 
 street          | character varying(100) |           | extended |              | 
Indexes:
    "branch_pkey" PRIMARY KEY, btree (branch_id) TABLESPACE pg_default
    "branch_branch_name_key" UNIQUE CONSTRAINT, btree (branch_name) TABLESPACE pg_default
Has OIDs: no
Options: orientation=row, compression=no

4.2.2 Manager(理财经理)表

  • Manager (work_number, name, system_password, ID_number, telephone, email, branch_ID);
  • 理财经理 (工号,姓名,系统密码,身份证号,电话,邮箱，工作银行ID);

删除表Manager

DROP TABLE IF EXISTS finance.Manager;

创建表Manager

CREATE TABLE finance.Manager
(
	work_number VARCHAR(20) PRIMARY KEY , 
	name VARCHAR(20) NOT NULL , 
	system_password VARCHAR(20) NOT NULL , 
	ID_number VARCHAR(20) UNIQUE , 
	telephone VARCHAR(20) , 
	email VARCHAR(50) , 
	branch_ID VARCHAR(20),
	FOREIGN KEY (branch_ID) REFERENCES finance.Branch (branch_ID) ON UPDATE CASCADE ON DELETE CASCADE
);

使用命令查看Manager表详细信息： \\d+ finance.Manager

                                   Table "finance.manager"
     Column      |         Type          | Modifiers | Storage  | Stats target | Description 
-----------------+-----------------------+-----------+----------+--------------+-------------
 work_number     | character varying(20) | not null  | extended |              | 
 name            | character varying(20) | not null  | extended |              | 
 system_password | character varying(20) | not null  | extended |              | 
 id_number       | character varying(20) |           | extended |              | 
 telephone       | character varying(20) |           | extended |              | 
 email           | character varying(50) |           | extended |              | 
 branch_id       | character varying(20) |           | extended |              | 
Indexes:
    "manager_pkey" PRIMARY KEY, btree (work_number) TABLESPACE pg_default
    "manager_id_number_key" UNIQUE CONSTRAINT, btree (id_number) TABLESPACE pg_default
Foreign-key constraints:
    "manager_branch_id_fkey" FOREIGN KEY (branch_id) REFERENCES branch(branch_id) ON UPDATE CASCADE ON DELETE CASCADE
Has OIDs: no
Options: orientation=row, compression=no

4.2.3 Account(账户)表

  • Account (account_no, account_amount, branch_ID,Customer_ID);
  • 账户 (账号,金额,开户行ID,客户ID);

删除表Account

DROP TABLE IF EXISTS finance.Account;

创建表Account

CREATE TABLE finance.Account
(
	account_no VARCHAR(20) PRIMARY KEY , 
	account_amount DOUBLE PRECISION NOT NULL , 
	branch_ID VARCHAR(20) , 
	Customer_ID VARCHAR(20),
	FOREIGN KEY (branch_ID) REFERENCES finance.Branch (branch_ID) ON UPDATE CASCADE ON DELETE CASCADE
);

使用命令查看Account表详细信息： \\d+ finance.Account

                                  Table "finance.account"
     Column     |         Type          | Modifiers | Storage  | Stats target | Description 
----------------+-----------------------+-----------+----------+--------------+-------------
 account_no     | character varying(20) | not null  | extended |              | 
 account_amount | double precision      | not null  | plain    |              | 
 branch_id      | character varying(20) |           | extended |              | 
 customer_id    | character varying(20) |           | extended |              | 
Indexes:
    "account_pkey" PRIMARY KEY, btree (account_no) TABLESPACE pg_default
Foreign-key constraints:
    "account_branch_id_fkey" FOREIGN KEY (branch_id) REFERENCES finance.branch(branch_id) ON UPDATE CASCADE ON DELETE CASCADE
Has OIDs: no
Options: orientation=row, compression=no

4.2.4 PersonalCustomer(个人客户)表

  • PersonalCustomer(PersonalCustomer_ID,system_password,name, ID_number,email, telephone,work_number);

  • 个人客户 (个人客户ID,客户密码,姓名,身份证号,邮箱,手机号码,理财经理工号);

删除表PersonalCustomer

DROP TABLE IF EXISTS finance.PersonalCustomer;

创建表PersonalCustomer

CREATE TABLE finance.PersonalCustomer
(
	PersonalCustomer_ID VARCHAR(20) PRIMARY KEY , 
	system_password VARCHAR(20) NOT NULL , 
	name VARCHAR(20) NOT NULL , 
	ID_number VARCHAR(20) UNIQUE , 
	email VARCHAR(50) , 
	telephone VARCHAR(20) , 
	work_number VARCHAR(20) , 
	FOREIGN KEY (work_number) REFERENCES finance.Manager (work_number) ON UPDATE CASCADE ON DELETE CASCADE
);

使用命令查看PersonalCustomer表详细信息： \\d+ finance.PersonalCustomer

                                Table "finance.personalcustomer"
       Column        |         Type          | Modifiers | Storage  | Stats target | Description 
---------------------+-----------------------+-----------+----------+--------------+-------------
 personalcustomer_id | character varying(20) | not null  | extended |              | 
 system_password     | character varying(20) | not null  | extended |              | 
 name                | character varying(20) | not null  | extended |              | 
 id_number           | character varying(20) |           | extended |              | 
 email               | character varying(50) |           | extended |              | 
 telephone           | character varying(20) |           | extended |              | 
 work_number         | character varying(20) |           | extended |              | 
Indexes:
    "personalcustomer_pkey" PRIMARY KEY, btree (personalcustomer_id) TABLESPACE pg_default
    "personalcustomer_id_number_key" UNIQUE CONSTRAINT, btree (id_number) TABLESPACE pg_default
Foreign-key constraints:
    "personalcustomer_work_number_fkey" FOREIGN KEY (work_number) REFERENCES manager(work_number) ON UPDATE CASCADE ON DELETE CASCADE
Has OIDs: no
Options: orientation=row, compression=no

4.2.5 EnterpriseCustomer(企业客户)表

  • EnterpriseCustomer (EnterpriseCustomer_ID,system_password, name, legal_person, address, business_number,work_number);
  • 企业客户 (企业客户ID,客户密码,企业名称,企业法人,注册地址,营业执照号，理财经理工号);

删除表EnterpriseCustomer

DROP TABLE IF EXISTS finance.EnterpriseCustomer;

创建表EnterpriseCustomer

CREATE TABLE finance.EnterpriseCustomer
(
	EnterpriseCustomer_ID VARCHAR(20) PRIMARY KEY , 
	system_password VARCHAR(20)	NOT NULL , 
	name VARCHAR(20) NOT NULL , 
	legal_person VARCHAR(20) , 
	address VARCHAR(100) , 
	business_number VARCHAR(20) ,
	work_number VARCHAR(20) ,
	FOREIGN KEY (work_number) REFERENCES finance.Manager (work_number) ON UPDATE CASCADE ON DELETE CASCADE
);

使用命令查看EnterpriseCustomer表详细信息： \\d+ finance.EnterpriseCustomer

                                 Table "finance.enterprisecustomer"
        Column         |          Type          | Modifiers | Storage  | Stats target | Description 
-----------------------+------------------------+-----------+----------+--------------+-------------
 enterprisecustomer_id | character varying(20)  | not null  | extended |              | 
 system_password       | character varying(20)  | not null  | extended |              | 
 name                  | character varying(20)  | not null  | extended |              | 
 legal_person          | character varying(20)  |           | extended |              | 
 address               | character varying(100) |           | extended |              | 
 business_number       | character varying(20)  |           | extended |              | 
 work_number           | character varying(20)  |           | extended |              | 
Indexes:
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