Activity 1 - Database Management System

Activity 1 - Database Management System

University

15 Qs

quiz-placeholder

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Activity 1 - Database Management System

Activity 1 - Database Management System

Assessment

Quiz

Engineering

University

Easy

Created by

Ms. Janani

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is rows of a relation known as?


Degree

Entity

Tuple

None

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the name of the query that is placed within a WHERE or HAVING clause of another query?

Subquery
Join Query
Aggregate Query
Filter Query

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the use of COUNT in SQL?

COUNT is used to delete rows from a table.
COUNT is used to update existing records.
COUNT is used to count the number of rows in a result set.
COUNT is used to create new tables.

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which data structure is used in Hierarchical model records?

Tree
List
Array
Graph

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which normal form deals with multivalued dependency?

Second Normal Form (2NF)
Third Normal Form (3NF)
Fourth Normal Form (4NF)
Fifth Normal Form (5NF)

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following allows to uniquely identify a tuple?


Primary key
Unique constraint
Foreign key
Composite key

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt


Select the correct command to modify a column in a table.

ALTER TABLE table_name MODIFY COLUMN column_name new_data_type;
MODIFY TABLE table_name CHANGE column_name new_data_type;
CHANGE TABLE table_name ALTER COLUMN column_name TYPE new_data_type;
UPDATE table_name SET column_name = new_data_type;

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