The document outlines five types of SQL commands: DDL (Data Definition Language) for defining data structure, DCL (Data Control Language) for controlling access, DML (Data Manipulation Language) for managing data within tables, TCL (Transaction Control Language) for managing transactions, and DQL (Data Query Language) for retrieving data. Each command type is associated with specific functionalities and examples in MSSQL. The document emphasizes the importance of these commands in maintaining database integrity and operations.

1. Based on functionalities
performed
Five Types of SQL Commands

3. DDL (Data Definition Language):
DDL is used to define the structure that holds the data.
Examples of DDL commands in MSSQL include CREATE,
ALTER, DROP, TRUNCATE, RENAME, and COMMENT.
These commands are responsible for creating,
modifying, and deleting database objects such as tables,
views, indexes, etc.

4. DCL (Data Control Language):
DCL is used to control access to data within
the database. Examples of DCL commands in
MSSQL include GRANT and REVOKE. These
commands are used to grant or revoke
permissions and privileges on database objects
to users and roles.

5. DML (Data Manipulation Language):
DML is used to manage data within database objects.
Examples of DML commands in MSSQL include SELECT,
INSERT, UPDATE, and DELETE. These commands are
used to perform operations on the data stored in tables,
such as retrieving data, inserting new records, updating
existing records, and deleting records.

6. TCL (Transaction Control Language):
TCL is used to manage transactions within the
database. Examples of TCL commands in MSSQL
include COMMIT, ROLLBACK, SAVEPOINT, SET
TRANSACTION, etc. These commands are used to
control the transactions, which are a sequence of
operations performed as a single logical unit of work,
ensuring data consistency and integrity.

7. DQL (Data Query Language):
DQL is used to retrieve data from the database. In
MSSQL, DQL primarily involves the SELECT
statement. SELECT statements are used to query
the database and retrieve data based on specified
criteria.

8. Thank you