This document provides instructions for various SQL commands used to create and manage databases and tables, insert, select, update, and delete data. It includes commands to create databases and tables, insert data into tables, select data using where clauses, update and delete rows, add and remove columns, and order results. The goal is to teach students how to structure and query a database through hands-on SQL commands and examples.

1. DBMS LAB ASSIGNMENT
1 010BScCSIT10
 Create database
Syntax: create database database_name;
E.g. create database bibash;
 Delete database
Syntax: drop database database_name;
E.g. drop database 010BScCSIT043;
 Create table
Syntax: create table table_name;
E.g.
create table person
(
person_id int,
fname varchar(100),
lname varchar(100),
address varchar(100),
age int,
phone bigint
);
 Delete table
Syntax: drop table table_name;
E.g. drop table person;

2. DBMS LAB ASSIGNMENT
2 010BScCSIT10
 Insert data in table
Syntax
insert into table table_name (field1, field2… fieldN)
values (value1, value2 … valueN);
If field2 value is to be null, then
insert into table_name (filed1,filed3,field4 … fieldN)
values (value1,value3,value4 … valueN);
E.g.
insert into person(person_id,fname,lname,address,age)
values(1,'Rajeev','Manandhar','Naxal',24);
insert into person(person_id,fname,lname,address,phone)
values(2,'Avishek','Satyal','Gairidhara',9841121326);
insert into person(person_id,fname,lname,address,age,phone)
values(3,'Avaya','Satyal','Gairidhara',25,9841689411);
insert into person(person_id,fname,lname,address,age,phone)
values(4,'Ayush','Ghimire','Old Baneshwor',20,9849611554);
insert into person(person_id,fname,lname,address,age,phone)
values(5,'Prajwol','Sharma','Hattigauda',20,9849102030);
insert into person(person_id,fname,lname,address,age,phone)
values(6,'Satyam','Nepal','Dillibazar',22,9841571219);
insert into person(person_id,fname,lname,address,age,phone)
values(7,'Saswot','Nepal','Dillibazar',15,9849209845);
insert into person(person_id,fname,lname,address,age,phone)
values(8,'Ashim','Adhikari','Chabahil',24,9849284671);
insert into person(person_id,fname,lname,address,age,phone)
values(9,'Manoj','Paudel','Gyaneshwor',24,984894152);
insert into person(person_id,fname,lname,address,age,phone)
values(10,'Raj','Rana','Balwataar',22,9841671560);

3. DBMS LAB ASSIGNMENT
3 010BScCSIT10
 Creating table with auto_increment
Syntax
create table table_name;
E.g.
create table person
(
person_id int not null auto_increment primary key,
fname varchar(100),
lname varchar(100),
address varchar(100),
age int,
phone bigint
);
insert into person(fname,lname,address,age)
values('Rajeev','Manandhar','Naxal',24);
insert into person(fname,lname,address,phone)
values('Avishek','Satyal','Gairidhara',9841121326);
insert into person(fname,lname,address,age,phone)
values('Avaya','Satyal','Gairidhara',25,9841689411);
insert into person(fname,lname,address,age,phone)
values('Ayush','Ghimire','Old Baneshwor',20,9849611554);
insert into person(fname,lname,address,age,phone)
values('Prajwol','Sharma','Hattigauda',20,9849102030);
insert into person(fname,lname,address,age,phone)
values('Satyam','Nepal','Dillibazar',22,9841571219);

4. DBMS LAB ASSIGNMENT
4 010BScCSIT10
insert into person(fname,lname,address,age,phone)
values('Saswot','Nepal','Dillibazar',15,9849209845);
insert into person(fname,lname,address,age,phone)
values('Ashim','Adhikari','Chabahil',24,9849284671);
insert into person(fname,lname,address,age,phone)
values('Manoj','Paudel','Gyaneshwor',24,984894152);
insert into person(fname,lname,address,age,phone)
values('Raj','Rana','Balwataar',22,9841671560);
 SELECT statement
Syntax
select column_name(s)
from table_name
select *from table_name [ * selects all columns ]
E.g. select fname,lname from person;

5. DBMS LAB ASSIGNMENT
5 010BScCSIT10
 Where clause
Syntax:
select *from table_name
where field_name=’value’
E.g.
select *from person
where address=’Gairidhara’;
select *from person
where lname= 'Nepal' AND (fname='Satyam' OR fname='Saswot');
 Update Statement
Syntax
Update table_name
SET column1=value, column2=value, ……
WHERE some_column = some_value
E.g.
Update person
SET address=’Samakhusi’
WHERE fname=’Ashim’ AND lname=’Adhikari’

6. DBMS LAB ASSIGNMENT
6 010BScCSIT10
 Delete from table
Syntax
Delete from table_name
Where some_column=some_value
E.g.
delete from person
where fname='Raj' AND lname='Rana'
 Selecting Distinct values from a set of data’s
Syntax: select DISTINCT column_name from table_name;
E.g. select distinct address from person;

7. DBMS LAB ASSIGNMENT
7 010BScCSIT10
 Ordering the table in descending or ascending order
Syntax:
select * from table_name order by column_name; (sorts attibutes in ascending order, by
default)
select * from table_name order by column_name DESC; (sorts address in descending order)
E.g.
select * from person order by address;
select * from person order by address DESC;

8. DBMS LAB ASSIGNMENT
8 010BScCSIT10
 Alter table to add and delete a column
Syntax: Alter table table_name(new_attribute);
E.g.alter table person add (citizenship_id int); (adds new column citizenship_id of type int)
 Combining conditions and Boolean expression
Syntax:select column1_name,column2_name… from table_name where condition AND/OR
condition
E.g.
select fname,lname,phone from person where person_id<6 AND age>19 ;
(Selects fname, lname and phone of those whose person_id is less than 6 and age is greater than
19)