SQL Command Essentials: DDL, DML, DCL, TCL 🚀

● DDL (Data Definition Language) 
– CREATE: Make new tables/databases 
– ALTER: Modify table structure 
– DROP: Delete tables/databases 
– TRUNCATE: Remove all data, keep structure

● DML (Data Manipulation Language) 
– SELECT: Retrieve data 
– INSERT: Add data 
– UPDATE: Change data 
– DELETE: Remove data

● DCL (Data Control Language) 
– GRANT: Give access rights 
– REVOKE: Remove access rights

● TCL (Transaction Control Language) 
– COMMIT: Save changes 
– ROLLBACK: Undo changes 
– SAVEPOINT: Mark save point to rollback 
– BEGIN/END TRANSACTION: Start/end transactions

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