Technical Evaluation - 101 - 2024

Technical Evaluation - 101 - 2024

Professional Development

50 Qs

quiz-placeholder

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Technical Evaluation - 101 - 2024

Technical Evaluation - 101 - 2024

Assessment

Quiz

Computers

Professional Development

Medium

Created by

Lilesh Pathe

Used 2+ times

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50 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which SQL function is used to count the number of rows in a SQL query?
COUNT()
NUMBER()
SUM()
COUNT(*)

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statement is true?
DELETE does not free the space containing the table and TRUNCATE free the space containing the table
Both DELETE and TRUNCATE free the space containing the table
Both DELETE and TRUNCATE does not free the space containing the table
DELETE free the space containing the table and TRUNCATE does not free the space containing the table

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the purpose of the SQL AS clause?
The AS SQL clause is used to change the name of a column in the result set or to assign a name to a derived column
The AS clause is used with the JOIN clause only
The AS clause defines a search condition
All of the mentioned

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

_______ allow us to identify uniquely a tuple in the relation.
schema
superkey
domain
attribute

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is correct regarding Aggregate functions?
it takes a single value and returns a single value as result
it takes a list of values and return a single values as result
it takes a list of values and return a list of values as result
it takes a single value and returns a list of values as result

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The attribute that can be divided into other attributes is called
composite attribute
derived attribute
simple attribute
multi-valued attribute

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If every non-key attribute is functionally dependent on the primary key, the relation will be in
fourth formal form
third normal form
first normal form
second normal form

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