Quiz Discussion

In SQL the spaces at the end of the string are removed by _______ function.

Course Name: SQL -Structured Query Language

  • 1]

    Upper

  • 2]

    String

  • 3]

    Trim

  • 4]

    Lower

Solution
No Solution Present Yet

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# Quiz
1
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
2
Discuss

The _______ operator takes the results of two queries and returns only rows that appear in both result sets.

  • 1]

    Union

  • 2]

    Intersect

  • 3]

    Difference

  • 4]

    Projection

Solution
3
Discuss

’_____’ matches any string of ______ three characters. ’_____%’ matches any string of at ______ three characters.

  • 1]

    Atleast, Exactly

  • 2]

    Exactly, Atleast

  • 3]

    Atleast, All

  • 4]

    All, Exactly

Solution
4
Discuss

The ______ clause allows us to select only those rows in the result relation of the ____ clause that satisfy a specified predicate.

  • 1]

    Where, from

  • 2]

    From, select

  • 3]

    Select, from

  • 4]

    From, where

Solution
5
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
6
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
7
Discuss
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
8
Discuss
SELECT * FROM employee WHERE dept_name="Comp Sci";

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

  • 1]

    Dept_name

  • 2]

    Employee

  • 3]

    “Comp Sci”

  • 4]

    From

Solution
9
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
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