Quiz Discussion

An attribute A of datatype varchar(20) has the value “Avi”. The attribute B of datatype char(20) has value ”Reed”. Here attribute A has ____ spaces and attribute B has ____ spaces.

• 1]

  3, 20

• 2]

  20, 4

• 3]

  20, 20

• 4]

  3, 4

The basic datatype char (n) is a _______ length character string and varchar (n) is _______ length character.

• 1]

  Fixed, equal

• 2]

  Equal, variable

• 3]

  Fixed, variable

• 4]

  Variable, equal

Which of the following is used to provide delete authorization to instructor?

• 1]

  CREATE ROLE instructor ;
  GRANT DELETE TO instructor;

   

• 2]

  CREATE ROLE instructor;
  GRANT SELECT ON takes
  TO instructor;

   

• 3]

  CREATE ROLE instructor;
  GRANT DELETE ON takes
  TO instructor;

   

• 4]

  All of the mentioned

Which of the following is true regarding views?

• 1]

  The user who creates a view cannot be given update authorization on a view without having update authorization on the relations used to define the view

• 2]

  The user who creates a view cannot be given update authorization on a view without having update authorization on the relations used to define the view

• 3]

  If a user creates a view on which no authorization can be granted, the system will allow the view creation request

• 4]

  A user who creates a view receives all privileges on that view

CREATE TABLE employee (name VARCHAR, id INTEGER)

What type of statement is this?

• 1]

  DML

• 2]

  DDL

• 3]

  View

• 4]

  Integrity constraint

SELECT * FROM employee

What type of statement is this?

• 1]

  DML

• 2]

  DDL

• 3]

  View

• 4]

  Integrity constraint

To remove a relation from an SQL database, we use the ______ command.

• 1]

  Delete

• 2]

  Purge

• 3]

  Remove

• 4]

  Drop table

The database administrator who authorizes all the new users, modifies the database and takes grants privilege is

• 1]

  Operator of operating system

• 2]

  Administrator

• 3]

  Super user

• 4]

  All of the mentioned

If we wish to grant a privilege and to allow the recipient to pass the privilege on to other users, we append the __________ clause to the appropriate grant command.

• 1]

  With grant

• 2]

  Grant user

• 3]

  Grant pass privilege

• 4]

  With grant option

Which one of the following is used to define the structure of the relation, deleting relations and relating schemas?

• 1]

  DML(Data Manipulation Langauge)

• 2]

  DDL(Data Definition Langauge)

• 3]

  Query

• 4]

  Relational Schema