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Category > Computer Science Posted 16 Dec 2017 My Price 10.00

Identify all relationships and specify cardinality

Study the ERD and answer the following questions:

  1. Identify all relationships and specify cardinality and business rules. For example: 1:M between Customer and Orders: a customer can place many orders; an order will be placed by one and only one customer.

 

1:M between Customer and Orders: a customer can place many orders; an order will be placed by one and only one customer.

 

 

and what am i doing wrong ; getting table does not exist error

 

CREATE TABLE CUSTOMER (

   CUSTNO VARCHAR2(8) PRIMARY KEY,

   CUSTFIRSTNAME VARCHAR2(20) NOT NULL,

   CUSTLASTNAME VARCHAR2(30) NOT NULL,

   CUSTSTREET VARCHAR2(50),

   CUSTCITY VARCHAR2(30),

   CUSTSTATE VARCHAR2(2),

   CUSTZIP VARCHAR2(10),

   CUSTBAL NUMBER(12,2)

);

CREATE TABLE ORDERS(

  ORDNO VARCHAR2(8) PRIMARY KEY,

  ORDDATE DATE NOT NULL,

  CUSTNO VARCHAR2(8) NOT NULL,

  EMPNO VARCHAR2(8),

  ORDNAME VARCHAR2(50),

  ORDSTREET VARCHAR2(50),

  ORDCITY VARCHAR2(30),

  ORDSTATE VARCHAR2(2),

  ORDZIP VARCHAR2(10),

  CONSTRAINT FK_CUSTNO FOREIGN KEY (CUSTNO) REFERENCES CUSTOMER(CUSTNO),

  CONSTRAINT FK_EMPNO FOREIGN KEY (EMPNO) REFERENCES EMPLOYEE(EMPNO)

);

CREATE TABLE EMPLOYEE (

   EMPNO VARCHAR2(8) PRIMARY KEY,

   EMPFIRSTNAME VARCHAR2(20) NOT NULL,

   EMPLASTNAME VARCHAR2(30) NOT NULL,

   EMPPHONE VARCHAR2(15),

   EMPEMAIL VARCHAR2(50) NOT NULL UNIQUE, 

   SUPEMPNO VARCHAR2(8),

   EMPCOMMRATE NUMBER(3,3),

   CONSTRAINT UK_EMPEMAIL UNIQUE (EMPEMAIL),

   CONSTRAINT FK_SUPEMPNO FOREIGN KEY (SUPEMPNO) REFERENCES EMPLOYEE(SUPEMPNO)

);

CREATE TABLE PRODUCT (

   PRODNO VARCHAR2(8) PRIMARY KEY,

   PRODNAME VARCHAR2(50) NOT NULL,

   PRODMFG VARCHAR2(20) NOT NULL,

   PRODQOH NUMBER(*,0),

   PRODPRICE NUMBER(12,2)

   PRODNEXTSHIPDATE DATE,

);

CREATE TABLE ORDER_LINE (

   ORDNO VARCHAR2(8) PRIMARY KEY,

   PRODNO VARCHAR2(8),

   QTY NUMBER(*,0),

   CONSTRAINT FK_ORDNO FOREIGN KEY (ORDNO) REFERENCES ORDERS(ORDNO),

   CONSTRAINT FK_PRODNO FOREIGN KEY (PRODNO) REFERENCES PRODUCT(PRODNO)

);

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SophiaPretty
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Status NEW Posted 16 Dec 2017 12:12 PM My Price 10.00

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