Q51. What is the purpose of following command?
Alter Table Student Drop Fee;
Q52. Write a command to remove primary key of table EMP.
Q53. Name a constraint used to specify the default value to an attribute in a table.
Q54. Write a command to remove an attribute "Author" from the table "Book".
Q55. What is the purpose of following query?
ALTER TABLE table_name DROP PRIMARY KEY;
Q56. We can use __________________ statement to remove a database permanently from the system.
Q57. We can use __________________ statement to remove a table permanently from the system.
Q58. Write a command to delete table 'Stock' permanently.
Q59. Write a command to delete database 'mydb' permanently.
Q60. ____________________ statement is used to insert new records in a table.
