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Quiz Discussion

SELECT * FROM employee WHERE dept_name="Comp Sci";

In the SQL given above there is an error . Identify the error.

Course Name: SQL -Structured Query Language

  • 1]

    Dept_name

  • 2]

    Employee

  • 3]

    “Comp Sci”

  • 4]

    From

Solution
No Solution Present Yet

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1
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SELECT name
FROM instructor
WHERE dept name = ’Physics’
ORDER BY name;

By default, the order by clause lists items in ______ order.

  • 1]

    Descending

  • 2]

    Any

  • 3]

    Same

  • 4]

    Ascending

Solution
10
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

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
3
Discuss

Using which language can a user request information from a database?

  • 1]

    Query

  • 2]

    Relational

  • 3]

    Structural

  • 4]

    Compiler

Solution
4
Discuss

Student(ID, name, dept name, tot_cred)
In this query which attributes form the primary key?

  • 1]

    Name

  • 2]

    Dept

  • 3]

    Tot_cred

  • 4]

    ID

Solution
5
Discuss

The term _______ is used to refer to a row.

  • 1]

    Attribute

  • 2]

    Tuple

  • 3]

    Field

  • 4]

    Instance

Solution
6
Discuss

A ________ is a pictorial depiction of the schema of a database that shows the relations in the database, their attributes, and primary keys and foreign keys.

  • 1]

    Schema diagram

  • 2]

    Relational algebra

  • 3]

    Database diagram

  • 4]

    Schema flow

Solution
7
Discuss

A relational database consists of a collection of

  • 1]

    Tables

  • 2]

    Fields

  • 3]

    Records

  • 4]

    Keys

Solution
8
Discuss
SELECT instructor.*
FROM instructor, teaches
WHERE instructor.ID= teaches.ID;

This query does which of the following operation?

  • 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
9
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
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