Quiz Discussion

Which one of the following is procedural language?

Course Name: SQL -Structured Query Language

  • 1]

    Domain relational calculus

  • 2]

    Tuple relational calculus

  • 3]

    Relational algebra

  • 4]

    Query language

Solution
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# Quiz
1
Discuss

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

  • 1]

    Query

  • 2]

    Relational

  • 3]

    Structural

  • 4]

    Compiler

Solution
2
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
3
Discuss

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

  • 1]

    Domain

  • 2]

    Relation

  • 3]

    Set

  • 4]

    Schema

Solution
4
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
5
Discuss

The tuples of the relations can be of ________ order.

  • 1]

    Any

  • 2]

    Same

  • 3]

    Sorted

  • 4]

    Constant

Solution
6
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
7
Discuss

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

  • 1]

    Different

  • 2]

    Indivisbile

  • 3]

    Constant

  • 4]

    Divisible

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

_____ operator is used for appending two strings.

  • 1]

    &

  • 2]

    %

  • 3]

    ||

  • 4]

    _

Solution
10
Discuss

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

  • 1]

    Upper

  • 2]

    String

  • 3]

    Trim

  • 4]

    Lower

Solution
# Quiz