SQL is a query language and has types                                 ?

The correct answer is All of the above because SQL (Structured Query Language) is structurally divided into several sub-languages to handle different database management tasks.

• Step 1 (Definition): SQL commands are categorized based on their functional purpose. Data Definition Language (DDL) handles schema structures (e.g., CREATE, ALTER); Data Manipulation Language (DML) manages data records (e.g., SELECT, INSERT, UPDATE); and Data Control Language (DCL) handles access permissions (e.g., GRANT, REVOKE).


• Step 2 (Application): Since a database administrator relies on all of these command categories to securely configure, maintain, and interact with a relational database management system, they are all valid types of the language.


• Incorrect Options:
  
  
  
  • Data definition is incorrect on its own because it only represents the schema-building subset of SQL, completely ignoring data manipulation and permission controls.
  
  
  • Data manipulation is incorrect on its own because it only covers data editing and querying commands without accounting for table structures or security.
  
  
  • Data control language is incorrect on its own because it focuses exclusively on user privileges and access states, omitting data manipulation and table definition capabilities.