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Introduction to DML Statements :-
DML commands are used to modify the database. It is responsible for all form of changes in the database.The command of DML is not auto- committed that means it can’t permanently save all the changes in the database. They can be rollback.
Here are some commands that come under DML:
- INSERT
- UPDATE
- DELETE
Objectives of DML Statements :-
- Manipulate Data: Allow users to insert, update, delete, and retrieve data from tables.
- Ensure Data Consistency: Maintain consistency and integrity during data modifications.
- Support Querying: Enable efficient querying through commands like SELECT for retrieving data.
- Facilitate Transactions: Manage changes within a transaction, ensuring data is consistent and accurate.
- Control Data Access: Allow for authorized users to modify data while protecting data integrity.
Summary of DML Statements :-
DML (Data Manipulation Language) statements are used to manipulate and manage data within a database. Key operations include:
- INSERT: Adds new records to tables.
- UPDATE: Modifies existing records.
- DELETE: Removes records from tables.
- SELECT: Retrieves data from one or more tables.
These statements allow users to interact with and modify the data while maintaining data integrity.