DATABASE TOPIC DATA MANUPULATION LANGUAGE

1. DML
DATA MANIPULATION LANGUAGE

2. WHAT IS DML
A data manipulation language (DML) is a family of computer
languages including commands permitting users to manipulate data
in a database. This manipulation involves
Select To Retrieve Data.
Inserting Data Into Database Tables.
Deleting Data From Existing Tables.
Updating Existing Data.

3. SELECT
To Retrieve Data. Which Is Basically In Backend And Also In
Database.
1) SELECT * FROM TAB;
2) SELECT * FROM EMP
WHERE ENAME = ‘KING’;

4. WHAT IS INSERT
Insert command Basically manipulates data in a
way/sense of adding/inserting rows into a table.
According To Rules Applied On Table Like Data Types
And Constraints.

5. Where we use Insert Command
We Use Insert Command In SQL To Insert Rows.
After We Created Table.
When You Needed More Data To Be Saved In
Backend.

6. Syntax And Query
Syntax :
Insert Into
Query :
INSERT INTO UCC
VALUES(1, ’NAME’ );

7. WHAT IS UPDATE
Update command Basically manipulates data in a
way/sense of modifying or updating rows from existing
tables.

8. Where we use UPDATE Command
We Use Update Command In SQL To Update Rows and
data.
When there will be existing rows.

9. Syntax And Query
Syntax :
update ucc
Query :
update UCC
set Name=‘Ali’
where Name=‘Akram’;

10. WHAT IS Delete
Delete command Basically manipulates data in a
way/sense of deleting rows from existing tables that
contain rows or records.

11. Where we use UPDATE Command
We Use delete Command In SQL To delete Rows or
records.
When there will be existing rows or records.

12. Syntax And Query
Syntax :
delete from
Query :
delete from UCC
where Name=‘Akram’;