Quiz Discussion

SELECT name
FROM instructor
WHERE salary <= 100000 AND salary >= 90000;

This query can be replaced by which of the following ?

Course Name: SQL -Structured Query Language

  • 1]
    SELECT name
    FROM instructor
    WHERE salary BETWEEN 90000 AND 100000;

     

  • 2]
    SELECT name
    FROM employee
    WHERE salary <= 90000 AND salary>=100000;

     

  • 3]
    SELECT name
    FROM employee
    WHERE salary BETWEEN 90000 AND 100000;

     

  • 4]
    SELECT name
    FROM instructor
    WHERE salary BETWEEN 100000 AND 90000;

     

Solution
No Solution Present Yet

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# Quiz
1
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
2
Discuss
SELECT name ____ instructor name, course id
FROM instructor, teaches
WHERE instructor.ID= teaches.ID;

Which keyword must be used here to rename the field name?

  • 1]

    From

  • 2]

    Rename

  • 3]

    As

  • 4]

    Join

Solution
3
Discuss

The most commonly used operation in relational algebra for projecting a set of tuple from a relation is

  • 1]

    Join

  • 2]

    Projection

  • 3]

    Select

  • 4]

    Union

Solution
4
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
5
Discuss

_____ operator is used for appending two strings.

  • 1]

    &

  • 2]

    %

  • 3]

    ||

  • 4]

    _

Solution
6
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
7
Discuss

Database __________ which is the logical design of the database, and the database _______ which is a snapshot of the data in the database at a given instant in time.

  • 1]

    Instance, Schema

  • 2]

    Relation, Schema

  • 3]

    Relation, Domain

  • 4]

    Schema, Instance

Solution
8
Discuss
SELECT *
FROM instructor
ORDER BY salary ____, name ___;

To display the salary from greater to smaller and name in ascending order which of the following options should be used?

  • 1]

    Ascending, Descending

  • 2]

    Asc, Desc

  • 3]

    Desc, Asc

  • 4]

    Descending, Ascending

Solution
9
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
10
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
# Quiz