SQL활용 #13 - ERD

0. VSCODE에서 ERD생성

1. ERD 기반 DDL 코드

CREATE TABLE BOARD
(
  BNO      NUMBER       ,
  BTITLE   VARCHAR2(100),
  BCONTENT CLOB         ,
  BHIT     NUMBER        DEFAULT 1,
  BREGDATE DATE          DEFAULT CURRENT_DATE,
  BTYPE    NUMBER(1)    ,
  UEMAIL   VARCHAR2(100)
);

COMMENT ON TABLE BOARD IS '게시판테이블';

COMMENT ON COLUMN BOARD.BNO IS '게시글번호';

COMMENT ON COLUMN BOARD.BTITLE IS '제목';

COMMENT ON COLUMN BOARD.BCONTENT IS '내용';

COMMENT ON COLUMN BOARD.BHIT IS '조회수';

COMMENT ON COLUMN BOARD.BREGDATE IS '등록일';

COMMENT ON COLUMN BOARD.BTYPE IS '게시판종류';

COMMENT ON COLUMN BOARD.UEMAIL IS '이메일';

CREATE TABLE BUY
(
  BNO      NUMBER        NOT NULL,
  BCNT     NUMBER       ,
  BREGDATE TIMESTAMP    ,
  ICODE    NUMBER        NOT NULL,
  UEMAIL   VARCHAR2(100) NOT NULL,
  CONSTRAINT PK_BUY PRIMARY KEY (BNO)
);

COMMENT ON TABLE BUY IS '주문테이블';

COMMENT ON COLUMN BUY.BNO IS '주문번호';

COMMENT ON COLUMN BUY.BCNT IS '주문수량';

COMMENT ON COLUMN BUY.BREGDATE IS '주문일자';

COMMENT ON COLUMN BUY.ICODE IS '물품코드';

COMMENT ON COLUMN BUY.UEMAIL IS '이메일';

CREATE TABLE BUYSTEP
(
  BSNO    NUMBER    NOT NULL,
  BNO     NUMBER    NOT NULL,
  STEP    NUMBER(2),
  REGDATE DATE      DEFAULT CURRENT_DATE,
  CONSTRAINT PK_BUYSTEP PRIMARY KEY (BSNO)
);

COMMENT ON TABLE BUYSTEP IS '주문절차테이블';

COMMENT ON COLUMN BUYSTEP.BSNO IS '번호';

COMMENT ON COLUMN BUYSTEP.BNO IS '주문번호';

COMMENT ON COLUMN BUYSTEP.STEP IS '절차번호';

COMMENT ON COLUMN BUYSTEP.REGDATE IS '날짜';

CREATE TABLE CART
(
  CNO      NUMBER        NOT NULL,
  CCNT     NUMBER       ,
  CREGDATE DATE          DEFAULT CURRENT_DATE,
  ICODE    NUMBER        NOT NULL,
  UEMAIL   VARCHAR2(100),
  CONSTRAINT PK_CART PRIMARY KEY (CNO)
);

COMMENT ON TABLE CART IS '장바구니테이블';

COMMENT ON COLUMN CART.CNO IS '카트번호';

COMMENT ON COLUMN CART.CCNT IS '수량';

COMMENT ON COLUMN CART.CREGDATE IS '등록일';

COMMENT ON COLUMN CART.ICODE IS '물품코드';

COMMENT ON COLUMN CART.UEMAIL IS '이메일';

CREATE TABLE ITEM
(
  ICODE      NUMBER        NOT NULL,
  INAME      VARCHAR2(100),
  ICONTENT   CLOB         ,
  IPRICE     NUMBER        DEFAULT 0,
  IQUANTITY  NUMBER        DEFAULT 0,
  IREGDATE   DATE          DEFAULT CURRENT_DATE,
  IIMAGE     BLOB         ,
  IIMAGENAME VARCHAR2(100),
  IIMAGESIZE NUMBER        DEFAULT 0,
  IIMAGETYPE VARCHAR2(30) ,
  UEMAIL     VARCHAR2(100) NOT NULL,
  CONSTRAINT PK_ITEM PRIMARY KEY (ICODE)
);

COMMENT ON TABLE ITEM IS '물품테이블';

COMMENT ON COLUMN ITEM.ICODE IS '물품코드';

COMMENT ON COLUMN ITEM.INAME IS '물품이름';

COMMENT ON COLUMN ITEM.ICONTENT IS '물품내용';

COMMENT ON COLUMN ITEM.IPRICE IS '물품가격';

COMMENT ON COLUMN ITEM.IQUANTITY IS '재고수량';

COMMENT ON COLUMN ITEM.IREGDATE IS '등록일';

COMMENT ON COLUMN ITEM.IIMAGE IS '대표이미지';

COMMENT ON COLUMN ITEM.IIMAGENAME IS '이미지이름';

COMMENT ON COLUMN ITEM.IIMAGESIZE IS '이미지크기';

COMMENT ON COLUMN ITEM.IIMAGETYPE IS '이미지타입';

COMMENT ON COLUMN ITEM.UEMAIL IS '이메일';

CREATE TABLE ITEMIMAGE
(
  IMGCODE  NUMBER        NOT NULL,
  INAME    VARCHAR2(100),
  ISIZE    NUMBER        DEFAULT 0,
  ITYPE    VARCHAR2(30) ,
  IREGDATE DATE          DEFAULT CURRENT_DATE,
  ICODE    NUMBER        NOT NULL,
  CONSTRAINT PK_ITEMIMAGE PRIMARY KEY (IMGCODE)
);

COMMENT ON TABLE ITEMIMAGE IS '물품이미지';

COMMENT ON COLUMN ITEMIMAGE.IMGCODE IS '물품이미지코드';

COMMENT ON COLUMN ITEMIMAGE.INAME IS '이미지이름';

COMMENT ON COLUMN ITEMIMAGE.ISIZE IS '이미지크기';

COMMENT ON COLUMN ITEMIMAGE.ITYPE IS '이미지타입';

COMMENT ON COLUMN ITEMIMAGE.IREGDATE IS '이미지등록일';

COMMENT ON COLUMN ITEMIMAGE.ICODE IS '물품코드';

CREATE TABLE MEMBER
(
  UEMAIL   VARCHAR2(100) NOT NULL,
  UPW      VARCHAR2(200) NOT NULL,
  UNAME    VARCHAR2(15) ,
  UPHONE   VARCHAR2(15)  DEFAULT 010-0000-0000,
  UROLE    VARCHAR2(10)  DEFAULT 'CUSTOMER',
  UREGDATE DATE          DEFAULT CURRENT_DATE,
  CONSTRAINT PK_MEMBER PRIMARY KEY (UEMAIL)
);

COMMENT ON TABLE MEMBER IS '회원테이블';

COMMENT ON COLUMN MEMBER.UEMAIL IS '이메일';

COMMENT ON COLUMN MEMBER.UPW IS '암호';

COMMENT ON COLUMN MEMBER.UNAME IS '이름';

COMMENT ON COLUMN MEMBER.UPHONE IS '연락처';

COMMENT ON COLUMN MEMBER.UROLE IS '권한';

COMMENT ON COLUMN MEMBER.UREGDATE IS '등록일';

CREATE TABLE MEMBERADDR
(
  UCODE     NUMBER        NOT NULL,
  UADDRESS  VARCHAR2(150),
  UPOSTCODE VARCHAR2(10) ,
  UREGDATE  DATE          DEFAULT CURRENT_DATE,
  UEMAIL    VARCHAR2(100) NOT NULL,
  UCHK      NUMBER(2)     DEFAULT 1,
  CONSTRAINT PK_MEMBERADDR PRIMARY KEY (UCODE)
);

COMMENT ON TABLE MEMBERADDR IS '회원주소테이블';

COMMENT ON COLUMN MEMBERADDR.UCODE IS '주소코드';

COMMENT ON COLUMN MEMBERADDR.UADDRESS IS '전체주소';

COMMENT ON COLUMN MEMBERADDR.UPOSTCODE IS '우편번호';

COMMENT ON COLUMN MEMBERADDR.UREGDATE IS '등록일';

COMMENT ON COLUMN MEMBERADDR.UEMAIL IS '이메일';

COMMENT ON COLUMN MEMBERADDR.UCHK IS '대표주소';

ALTER TABLE MEMBERADDR
  ADD CONSTRAINT FK_MEMBER_TO_MEMBERADDR
    FOREIGN KEY (UEMAIL)
    REFERENCES MEMBER (UEMAIL);

ALTER TABLE ITEMIMAGE
  ADD CONSTRAINT FK_ITEM_TO_ITEMIMAGE
    FOREIGN KEY (ICODE)
    REFERENCES ITEM (ICODE);

ALTER TABLE ITEM
  ADD CONSTRAINT FK_MEMBER_TO_ITEM
    FOREIGN KEY (UEMAIL)
    REFERENCES MEMBER (UEMAIL);

ALTER TABLE BOARD
  ADD CONSTRAINT FK_MEMBER_TO_BOARD
    FOREIGN KEY (UEMAIL)
    REFERENCES MEMBER (UEMAIL);

ALTER TABLE CART
  ADD CONSTRAINT FK_ITEM_TO_CART
    FOREIGN KEY (ICODE)
    REFERENCES ITEM (ICODE);

ALTER TABLE CART
  ADD CONSTRAINT FK_MEMBER_TO_CART
    FOREIGN KEY (UEMAIL)
    REFERENCES MEMBER (UEMAIL);

ALTER TABLE BUY
  ADD CONSTRAINT FK_ITEM_TO_BUY
    FOREIGN KEY (ICODE)
    REFERENCES ITEM (ICODE);

ALTER TABLE BUY
  ADD CONSTRAINT FK_MEMBER_TO_BUY
    FOREIGN KEY (UEMAIL)
    REFERENCES MEMBER (UEMAIL);

ALTER TABLE BUYSTEP
  ADD CONSTRAINT FK_BUY_TO_BUYSTEP
    FOREIGN KEY (BNO)
    REFERENCES BUY (BNO);

2. 안되면 드랍더 테이블

DROP TABLE MEMBER CASCADE CONSTRAINTS;
DROP TABLE MEMBERADDR CASCADE CONSTRAINTS;
DROP TABLE BOARD CASCADE CONSTRAINTS;
DROP TABLE ITEM CASCADE CONSTRAINTS;
DROP TABLE ITEMIMAGE CASCADE CONSTRAINTS;
DROP TABLE CART CASCADE CONSTRAINTS;
DROP TABLE BUY CASCADE CONSTRAINTS;
DROP TABLE BUYSTEP CASCADE CONSTRAINTS;

3. 시퀀스 생성

CREATE SEQUENCE SEQ_MEMBERADDR_UCODE START WITH 1 INCREMENT BY 1 NOMAXVALUE NOCACHE;
CREATE SEQUENCE SEQ_ITEM_ICODE START WITH 1 INCREMENT BY 1 NOMAXVALUE NOCACHE;
CREATE SEQUENCE SEQ_ITEMIMAGE_ICODE START WITH 1 INCREMENT BY 1 NOMAXVALUE NOCACHE;
CREATE SEQUENCE SEQ_BOARD_NO START WITH 1 INCREMENT BY 1 NOMAXVALUE NOCACHE;
CREATE SEQUENCE SEQ_CART_NO START WITH 1 INCREMENT BY 1 NOMAXVALUE NOCACHE;
CREATE SEQUENCE SEQ_BUY_NO START WITH 1 INCREMENT BY 1 NOMAXVALUE NOCACHE;
CREATE SEQUENCE SEQ_BUYSTEP_NO START WITH 1 INCREMENT BY 1 NOMAXVALUE NOCACHE;