Quiz Discussion

Which one of the following provides the ability to query information from the database and to insert tuples into, delete tuples from, and modify tuples in the database?

Course Name: SQL -Structured Query Language

  • 1]

    DML(Data Manipulation Langauge)

  • 2]

    DDL(Data Definition Langauge)

  • 3]

    Query

  • 4]

    Relational Schema

Solution
No Solution Present Yet

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# Quiz
1
Discuss

In the authorization graph, if DBA provides authorization to u1 which in turn gives to u2 which of the following is correct?

  • 1]

    If DBA revokes authorization from u1 then u2 authorization is also revoked

  • 2]

    If u1 revokes authorization from u2 then u2 authorization is revoked

  • 3]

    If DBA & u1 revokes authorization from u1 then u2 authorization is also revoked

  • 4]

    If u2 revokes authorization then u1 authorization is revoked

Solution
2
Discuss

Updates that violate __________ are disallowed.

  • 1]

    Integrity constraints

  • 2]

    Transaction control

  • 3]

    Authorization

  • 4]

    DDL constraints

Solution
3
Discuss

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

Solution
4
Discuss

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

Solution
5
Discuss

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

Solution
6
Discuss
SELECT * FROM employee

What type of statement is this?

  • 1]

    DML

  • 2]

    DDL

  • 3]

    View

  • 4]

    Integrity constraint

Solution
7
Discuss

Which of the following is used to provide privilege to only a particular attribute?

  • 1]

    Grant update(budget,salary,Rate) on department to Raj

  • 2]

    Grant update(budget) on department to Raj

  • 3]

    Grant select on employee to Amit

  • 4]

    Grant delete to Amit

Solution
8
Discuss
DELETE FROM r;   /* r - relation  */

This command performs which of the following action?

  • 1]

    Remove relation

  • 2]

    Clear relation entries

  • 3]

    Delete fields

  • 4]

    Delete rows

Solution
9
Discuss

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

Solution
10
Discuss
CREATE TABLE employee (name VARCHAR, id INTEGER)

What type of statement is this?

  • 1]

    DML

  • 2]

    DDL

  • 3]

    View

  • 4]

    Integrity constraint

Solution
# Quiz