The document discusses the main functions of a data manipulation language (DML) which allow users to manipulate data in a database. DML commands include SELECT to retrieve data, INSERT to add new rows to tables, UPDATE to modify existing data, and DELETE to remove rows from tables. Examples of SQL syntax are provided for each DML command including SELECT, INSERT, UPDATE, and DELETE.

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’;