Quiz Discussion

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

Course Name: SQL -Structured Query Language

  • 1]

    Different

  • 2]

    Indivisbile

  • 3]

    Constant

  • 4]

    Divisible

Solution
No Solution Present Yet

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# Quiz
1
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
2
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
3
Discuss

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

  • 1]

    Upper

  • 2]

    String

  • 3]

    Trim

  • 4]

    Lower

Solution
4
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
5
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
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
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
8
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
9
Discuss

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

  • 1]

    Query

  • 2]

    Relational

  • 3]

    Structural

  • 4]

    Compiler

Solution
10
Discuss

The term _______ is used to refer to a row.

  • 1]

    Attribute

  • 2]

    Tuple

  • 3]

    Field

  • 4]

    Instance

Solution
# Quiz