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
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# Quiz
1
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
2
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
3
Discuss

Which one of the following is procedural language?

  • 1]

    Domain relational calculus

  • 2]

    Tuple relational calculus

  • 3]

    Relational algebra

  • 4]

    Query language

Solution
4
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
5
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
6
Discuss

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

  • 1]

    Column

  • 2]

    Key

  • 3]

    Row

  • 4]

    Entry

Solution
7
Discuss

The term attribute refers to a ___________ of a table.

  • 1]

    Record

  • 2]

    Column

  • 3]

    Tuple

  • 4]

    Key

Solution
8
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
9
Discuss

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

  • 1]

    Query

  • 2]

    Relational

  • 3]

    Structural

  • 4]

    Compiler

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