ЗАДАНИЕ 1.3. Приемы моделирования Справочников / create_db

/****************Скрипты создания таблиц*********************/
/*********************Параметры-перечисления*************************/
CREATE TABLE ENUM(
    ID_ENUM SERIAL PRIMARY KEY,
    NAME VARCHAR(50) UNIQUE,
    SHORT_NAME VARCHAR(10)
);

CREATE TABLE ENUM_VALUE(
    ID_VALUE SERIAL PRIMARY KEY,
    ID_ENUM INTEGER,
    VALUE INTEGER NOT NULL,
    NAME VARCHAR(50) NOT NULL,
    SHORT_NAME VARCHAR(10),
    FOREIGN KEY (ID_ENUM) REFERENCES ENUM(ID_ENUM) ON DELETE CASCADE
);


/*********************Изделия и классы*************************/
CREATE TABLE EI
(
    SHORT_NAME varchar(10),
    NAME       varchar(50) NOT NULL,
    CODE       varchar(3) primary key
);

create table PRODUCT_CLASS
(
    SHORT_NAME VARCHAR(10),
    ID_CLASS   SERIAL PRIMARY KEY,
    NAME       VARCHAR(50) unique,
    MAIN_CLASS INTEGER,
    BASE_EI    VARCHAR(3),
        FOREIGN KEY (BASE_EI) REFERENCES EI (CODE),
        FOREIGN KEY (MAIN_CLASS) REFERENCES PRODUCT_CLASS (ID_CLASS)
);

CREATE TABLE PRODUCT
(
    ID_PROD    SERIAL PRIMARY KEY ,
    SHORT_NAME VARCHAR(50),
    NAME       VARCHAR(250) NOT NULL ,
    ID_CLASS      INTEGER,
        FOREIGN KEY (ID_CLASS) REFERENCES PRODUCT_CLASS (ID_CLASS)
);


/*********************Параметры******************************/
CREATE TABLE PARAMETER
(
    ID_PAR SERIAL PRIMARY KEY ,
    NAME VARCHAR(100) UNIQUE ,
    SHORT_NAME VARCHAR(10),
    ENUM_TYPE BOOL NOT NULL,
    EI_CODE VARCHAR(3) NULL,
    ENUM_ID INTEGER NULL,
        FOREIGN KEY (EI_CODE) REFERENCES EI (CODE),
        FOREIGN KEY (ENUM_ID) REFERENCES ENUM (ID_ENUM)
);

CREATE TABLE CLASS_PARAMETERS
(
  ID_CLASS INTEGER,
  ID_PARAMETER INTEGER,
  MIN_VALUE REAL NULL,
  MAX_VALUE REAL NULL,
  PRIMARY KEY (ID_CLASS, ID_PARAMETER),
  FOREIGN KEY (ID_CLASS) REFERENCES PRODUCT_CLASS (ID_CLASS),
  FOREIGN KEY (ID_PARAMETER) REFERENCES PARAMETER (ID_PAR)
);

CREATE TABLE PRODUCT_PARAM
(
    PRODUCT_ID INTEGER,
    PARAM_ID INTEGER,
    VALUE REAL,
    ENUM_VALUE VARCHAR(30),
    PRIMARY KEY (PRODUCT_ID, PARAM_ID),
    FOREIGN KEY (PRODUCT_ID) REFERENCES PRODUCT (ID_PROD),
    FOREIGN KEY (PARAM_ID) REFERENCES PARAMETER (ID_PAR)

);