Difference Between DDL and DML Command in SQL
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Difference Between DDL and DML Command in SQL
DDL stands for Data Definition Language whereas, DML stands for Data Manipulation Language. DDL is used to create Database Structure whereas, DML is used to manage the data within the database itself. DDL statements would be CREATE, ALTER, DROP, TRUNCATE, etc whereas, DML statements would be SELECT, INSERT, UPDATE, DELETE, etc.
DDL which stands for Data Definition Language, is mainly used to define the schema within a database. It also defines the relationship between the entries within the database.
DML which stands for Data Manipulation Language, DML can be utilized to insert, delete, revive, and modify the data, rather than just specify it.
Difference Between DDL and DML Command in SQL
- Data Definition Language: To create/modify data structures (tables) that will hold the data.
- Data Manipulation Language: To create/modify/retrieve the actual data.
Difference Between DDL and DML Command in SQL
| DDL | DML |
|---|---|
| DDL Stand For Data Definition Language | DML Stand for Data Manipulation Language |
| It is used to create the database schema | It is used to populate and manipulate database |
| It is not classified further | It is further classified as Procedural and Non-Procedural DMLs |
| CREATE, ALTER, DROP, TRUNCATE AND COMMENT and RENAME, etc | SELECT, INSERT, UPDATE, DELETE, MERGE, CALL, etc |
| SQL Statement can't be rollback | SQL Statement can be rollback |
| DDL Command affect the entire database or the table | Command affect one or more records in a table |
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