Question

What are the different DDL commands ?

Answer 1

DDL commands:

(i) Create 

(ii) Alter 

(iii) Drop 

(iv) Truncate

• Create : To create tables in the database.
• Alter : The ALTER command is used
  to alter the table structure like adding a column, renaming the existing column, change the data type of any column or size of the column or delete the column from the table.
• Drop : Delete tables from database.
• Truncate : Remove all records from a table, also release the space occupied by those records.