Can you help with these SQL queries?I have uploaded the questions below. Tutorial 8Тopic:Structured Query Language• Write a SQL statement to create a simple tablecountries including columnscountry_id,country_name and region_id.Structure of the table:mysql> DESC countries;| Field| Туре| Null | Key | Default | Extra || COUNTRY_ID| COUNTRY_NAMEvarchar(2)varchar(40)| decimal(10,0) | YES| YES| YES| NULL| NULL| NULLREGION_ID• Write a SQL statement to create the structure of atable dup_countries similar to countries.Structure of the table:mysql> DESC dup_countries;| FieldТуре| NullKey | Default | Extra || varchar(2)| COUNTRY_ID| COUNTRY_NAME | varchar(40)| YES| YESdecimal(10,0) | YES| NULL| NULL| NULLREGION_ID• Write a SQL statement to create a table countriesset a constraint NULL.mysql> desc countries;Field| ТуреNullKeyDefault Extra| NO| NO| decimal(10,0) | NOCOUNTRY_IDvarchar(2)NULLCOUNTRY_NAME | varchar(40)| REGION_ID| NULL| NULL3 rows in set (0.00 sec)• Write a SQL statement to create a table named jobsincluding columns job_id, job_title, min_salary,max_salary and check whether the max_salaryamount exceeding the upper limit 25000.• Write a SQL statement to create a table namedincludingandcountriescolumnscountry_id,country_namemake sure that no duplicate data against columncountry_id will be allowed at the time ofinsertion.region_id and • Write a SQL statement to create a table named jobsincluding columns job_id, job_title, min_salaryand max_salary, and make sure that, the defaultvalue for job_title is blank and min_salary is8000 and max_salary is NULL will be enteredautomatically at the time of insertion if no valueassigned for the specified columns.Write a SQL statement to create a table namedcountriesincludingcolumnscountry_id,country_name and region_id and make sure thatthe country_id column will be a key field whichwill not contain any duplicate data at the time ofinsertion.• Write a SQL statement to create a table job_historyincluding columns employee_id, start_date,end_date, job_id and department_id and makesure that, the employee_id column does notcontain any duplicate value at the time ofinsertion and the foreign key column job_idcontain only those values which are exists in thejobs table.• Write a SQL statement to create a table employeesincluding columns employee_id, first_name,last_name, email, phone_number hire_date,job_id, salary, commission, manager_id anddepartment_idemployee_id column does not contain anyduplicate value at the time of insertion and theforeign key columns combined by department_idand manager_id columns contain only thoseunique combination values, which combinationsare exists in the departments table.andmakesurethat, the

As per our guidelines we are supposed to answer only 1st three parts. Kindly repost the remaining…

Tutorial 8 Тopic: Structured Query Language •Write a SQL statement to create a simple table countries including columns country_id,country_name and region_id. Structure of the table: mysql> DESC countries; | Field Туре | Null | Key | Default | Extra | COUNTRY_ID | COUNTRY_NAME | varchar(2) varchar (40) decimal(10, 0) | YES | YES | YES | NULL | NULL | NULL REGION_ID • Write a SQL statement to create the structure of a table dup_countries similar to countries. Structure of the table: mysql> DESC dup_countries; | Field | Туре Null Key | Default | Extra | varchar(2) | COUNTRY_ID | COUNTRY NAME | varchar(40) | REGION_ID | YES | YES | decimal (10,0) | YES | NULL | NULL NULL • Write a SQL statement to create a table countries set a constraint NULL. mysql> desc countries; | Field Туре Null Key | Default | Extra | COUNTRY_ID | COUNTRY_NAME | REGION_ID | varchar(2) varchar(40) | decimal(10,0) | NO | NO | NO | NULL | NULL | NULL 3 rows in set (0.00 sec) Writo o SOL atoto mont t e oreoto o omad ioha

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.

Question

Can you help with these SQL queries?

I have uploaded the questions below.

Tutorial 8
Тopic:
Structured Query Language
• Write a SQL statement to create a simple table
countries including columns
country_id,country_name and region_id.
Structure of the table:
mysql> DESC countries;
| Field
| Туре
| Null | Key | Default | Extra |
| COUNTRY_ID
| COUNTRY_NAME
varchar(2)
varchar(40)
| decimal(10,0) | YES
| YES
| YES
| NULL
| NULL
| NULL
REGION_ID
• Write a SQL statement to create the structure of a
table dup_countries similar to countries.
Structure of the table:
mysql> DESC dup_countries;
| Field
Туре
| Null
Key | Default | Extra |
| varchar(2)
| COUNTRY_ID
| COUNTRY_NAME | varchar(40)
| YES
| YES
decimal(10,0) | YES
| NULL
| NULL
| NULL
REGION_ID
• Write a SQL statement to create a table countries
set a constraint NULL.
mysql> desc countries;
Field
| Туре
Null
Key
Default Extra
| NO
| NO
| decimal(10,0) | NO
COUNTRY_ID
varchar(2)
NULL
COUNTRY_NAME | varchar(40)
| REGION_ID
| NULL
| NULL
3 rows in set (0.00 sec)
• Write a SQL statement to create a table named jobs
including columns job_id, job_title, min_salary,
max_salary and check whether the max_salary
amount exceeding the upper limit 25000.
• Write a SQL statement to create a table named
including
and
countries
columns
country_id,country_name
make sure that no duplicate data against column
country_id will be allowed at the time of
insertion.
region_id and

• Write a SQL statement to create a table named jobs
including columns job_id, job_title, min_salary
and max_salary, and make sure that, the default
value for job_title is blank and min_salary is
8000 and max_salary is NULL will be entered
automatically at the time of insertion if no value
assigned for the specified columns.
Write a SQL statement to create a table named
countries
including
columns
country_id,
country_name and region_id and make sure that
the country_id column will be a key field which
will not contain any duplicate data at the time of
insertion.
• Write a SQL statement to create a table job_history
including columns employee_id, start_date,
end_date, job_id and department_id and make
sure that, the employee_id column does not
contain any duplicate value at the time of
insertion and the foreign key column job_id
contain only those values which are exists in the
jobs table.
• Write a SQL statement to create a table employees
including columns employee_id, first_name,
last_name, email, phone_number hire_date,
job_id, salary, commission, manager_id and
department_id
employee_id column does not contain any
duplicate value at the time of insertion and the
foreign key columns combined by department_id
and manager_id columns contain only those
unique combination values, which combinations
are exists in the departments table.
and
make
sure
that, the

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