Quiz Discussion

SELECT instructor.*
FROM instructor, teaches
WHERE instructor.ID= teaches.ID;

This query does which of the following operation?

Course Name: SQL -Structured Query Language

  • 1]

    All attributes of instructor and teaches are selected

  • 2]

    All attributes of instructor are selected on the given condition

  • 3]

    All attributes of teaches are selected on given condition

  • 4]

    Only the some attributes from instructed and teaches are selected

Solution
No Solution Present Yet

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# Quiz
1
Discuss

Course(course_id,sec_id,semester)

Here the course_id,sec_id and semester are __________ and course is a _________

  • 1]

    Relations, Attribute

  • 2]

    Attributes, Relation

  • 3]

    Tuple, Relation

  • 4]

    Tuple, Attributes

Solution
2
Discuss

A relational database consists of a collection of

  • 1]

    Tables

  • 2]

    Fields

  • 3]

    Records

  • 4]

    Keys

Solution
3
Discuss

The result which the operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.

  • 1]

    Join

  • 2]

    Cartesian product

  • 3]

    Intersection

  • 4]

    Set difference

Solution
4
Discuss

For each attribute of a relation, there is a set of permitted values, called the ________ of that attribute.

  • 1]

    Domain

  • 2]

    Relation

  • 3]

    Set

  • 4]

    Schema

Solution
5
Discuss

The term _______ is used to refer to a row.

  • 1]

    Attribute

  • 2]

    Tuple

  • 3]

    Field

  • 4]

    Instance

Solution
6
Discuss

The ________ clause is used to list the attributes desired in the result of a query.

  • 1]

    Where

  • 2]

    Select

  • 3]

    From

  • 4]

    Distinct

Solution
7
Discuss
SELECT emp_name
FROM department
WHERE dept_name LIKE ’ _____ Computer Science’;

Which one of the following has to be added into the blank to select the dept_name which has Computer Science as its ending string?

  • 1]

    %

  • 2]

    _

  • 3]

    ||

  • 4]

    $

Solution
8
Discuss

The tuples of the relations can be of ________ order.

  • 1]

    Any

  • 2]

    Same

  • 3]

    Sorted

  • 4]

    Constant

Solution
9
Discuss

The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.

  • 1]

    Select

  • 2]

    Join

  • 3]

    Union

  • 4]

    Intersection

Solution
10
Discuss

A domain is atomic if elements of the domain are considered to be ____________ units.

  • 1]

    Different

  • 2]

    Indivisbile

  • 3]

    Constant

  • 4]

    Divisible

Solution
# Quiz