Quiz Discussion

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

Course Name: SQL -Structured Query Language

  • 1]

    Domain

  • 2]

    Relation

  • 3]

    Set

  • 4]

    Schema

Solution
No Solution Present Yet

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# Quiz
1
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
2
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
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

A relational database consists of a collection of

  • 1]

    Tables

  • 2]

    Fields

  • 3]

    Records

  • 4]

    Keys

Solution
5
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
6
Discuss

The tuples of the relations can be of ________ order.

  • 1]

    Any

  • 2]

    Same

  • 3]

    Sorted

  • 4]

    Constant

Solution
7
Discuss

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

  • 1]

    Upper

  • 2]

    String

  • 3]

    Trim

  • 4]

    Lower

Solution
8
Discuss

The _________ provides a set of operations that take one or more relations as input and return a relation as an output.

  • 1]

    Schematic representation

  • 2]

    Relational algebra

  • 3]

    Scheme diagram

  • 4]

    Relation flow

Solution
9
Discuss

A ________ in a table represents a relationship among a set of values.

  • 1]

    Column

  • 2]

    Key

  • 3]

    Row

  • 4]

    Entry

Solution
10
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
# Quiz