ddl and dml in sql (the difference between sql and access)

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The main difference between DDL and DML is: DDL helps to change the structure of the database whereas DML helps to manage the data in the database.

Essential difference

DDL stands for Data Definition Language and is an SQL command that helps create database schemas.DML stands for Data Manipulation Language and is a SQL command that helps to retrieve and manage data in relational databases.

Differences in commands

Commonly used commands in DDL are: create, drop, alter, truncate and rename, etc.The commonly used commands in DML are: insert, update, delete and select and so on.

Difference in impact

DDL commands affect the entire database or table, while DML commands affect one or more records in a table.

Difference on rollback

SQL statements with DDL commands are automatically committed, and their changes are permanently saved in the database and cannot be rolled back.SQL statements with DML commands are not automatically committed, and the changes caused by them are not permanent and can be rolled back.

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