Скачать или смотреть SQL Working With DDL and DML Commands

In SQL, DDL (Data Definition Language) and DML (Data Manipulation Language) are two types of commands used to interact with databases.

DDL Commands: These are used to define or modify the structure of database objects like tables, indexes, or schemas. Common DDL commands include:

CREATE: Creates a new table or database object.
ALTER: Modifies an existing table's structure.
DROP: Deletes a table or database object.
TRUNCATE: Removes all records from a table but keeps the table structure.
DML Commands: These are used to manipulate the data within database tables. Common DML commands include:

SELECT: Retrieves data from one or more tables.
INSERT: Adds new data into a table.
UPDATE: Modifies existing data in a table.
DELETE: Removes data from a table.
DDL commands focus on the structure, while DML commands deal with the data itself.

What you learn from this video:
SQL Working With DDL and DML Commands

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