Chapter 3, Problem 18E

Program Plan Intro

Data Definition Language (DDL): It is used for creating tables and other structures. They perform operations like, creating tables, modifying database, and removing database.

Table Creation:

Creating table comes under Data Definition Language (DDL). Syntax for creating table is as follows:

CREATE TABLE TABLE_NAME (

  Column1 datatype,

  Column2 datatype,

  …

);

Explanation of Solution

b.

Query:

create table company(company_name varchar2(50) primary key, city varchar2(50));

Explanation:

The above q...

Explanation of Solution

c.

Query:

create table works(employee_name varchar2(50), company_name varchar2(50), salary number(10, 2), foreign key (employee_name) references employee(employee_name), foreign key(company_name)references company(company_name));

Explanation of Solution

d.

Query:

create table manages(employee_name varchar2(50), manager_name varchar2(50) primary key, foreign key(employee_name) references employee(employee_name));

Explanation:

...

Explanation of Solution

e.

Query:

create table participated (report_number char(20) primary key, license char(20) references car, driver_id char(20) references driver, damage_amount dec(6,2) )

Explanation:

The above query is used creat...