Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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What is the SQL syntax to create a composite primary key of 2 columns and then a composite foreign key that references this composite primary key?
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- use oracle sql developper or Oracle sql developper problem in picture the database CREATE TABLE MEMBERSHIP( MEM_NUM CHAR(3) CONSTRAINT MEMBER_MEM_NUM_PK PRIMARY KEY,MEM_FNAME VARCHAR(30) NOT NULL,MEM_LNAME VARCHAR(30) NOT NULL,MEM_STREET VARCHAR(15),MEM_CITY VARCHAR(10),MEM_STATE CHAR(2),MEM_ZIP CHAR(5),MEM_BALANCE NUMBER (2)); ALTER TABLE MEMBERSHIPMODIFY MEM_STREET VARCHAR(25);CREATE TABLE RENTAL( RENT_NUM CHAR(4) CONSTRAINT RENTAL_RENT_NUM_PK PRIMARY KEY,RENT_DATE DATE,MEM_NUM CHAR(3),CONSTRAINT RENTAL_MEM_NUM_FK FOREIGN KEY (MEM_NUM) REFERENCES MEMBERSHIP); CREATE TABLE PRICE(PRICE_CODE CHAR(1) CONSTRAINT PRICE_PRICE_CODE_PK PRIMARY KEY,PRICE_DESC VARCHAR(20),PRICE_RENTFEE NUMBER (3,1),PRICE_DAILYATFEE NUMBER(3,1)); CREATE TABLE MOVIE(MOVIE_NUM CHAR(4) CONSTRAINT MOVIE_MOVIE_NUM_PK PRIMARY KEY,MOVIE_NAME VARCHAR(30) NOT NULL,MOVIE_YEAR CHAR(4),MOVIE_COST NUMBER(5,2),MOVIE_GENRE VARCHAR(15),PRICE_CODE CHAR(1),CONSTRAINT MOVIE_PRICE_CODE_FK FOREIGN KEY (PRICE_CODE) REFERENCES…arrow_forwardHow are clustered and non-clustered indexes different in SQL?arrow_forward1. How to delete an existing table "t_person" in SQL? 2. How to use SQL to add a field "p_address" to a table "t_person"?arrow_forward
- USE this part to write SQL statements at the bottom questions 1-11 Branch(branch_id:integer, branch_name:varchar(50), branch_location:varchar(40), money_on_hand:numeric(15,2) create table Branch (branch_id integer, branch_name varchar(50), branch_location varchar(40), money_on_hand numeric(15,2), primary key (branch_id)); Loan(loan_number:integer, branch_id:integer, amount:numeric(8,2)) foreign key branch_id references Branch(branch_id) create table Loan (loan_number integer, branch_id integer, amount numeric(8,2), primary key (loan_number), foreign key (branch_id) references Branch (branch_id)); Customer(customer_id:integer, customer_last_name:varchar(35),customer_first_name:varchar(25), customer_street:varchar(30),…arrow_forwardWhat is the significance of the CHECKSUM function in SQL, especially in data comparison scenarios?arrow_forward
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