Relational database

Relational database

University

12 Qs

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Relational database

Relational database

Assessment

Quiz

Computers

University

Practice Problem

Medium

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12 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Is the Entity Relationship Model used to make a Conceptual Database Model?

Yes
No

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is E-R model used for?

To extract content  from the database
To design and visualize database
To create a graphical user interface

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should a primary key contain?

A lot of different values
A null value
An unique value

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct way to begin your SQL query if you want to displays data that is stored in a specific table?

COLLECT
COMBINE
SELECT
CHOOSE

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the expected output from following SQL Query:
SELECT title
FROM videogames
WHERE title LIKE  '%2'

It will only show video games which contains the character 2 somewhere in the title
It will only show  videogames which begins with the character 2 in the title
It will only show videogames which ends with the character 2 in the title

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is it possible to have dublicated foreign keys in a helping table?

YES
NO

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a relational database?

A relational database organizes data into tables, and links them together, based on key-fields. These relationships enable you to retrieve and combine data from one or more tables with a single query
A relational database arranges data into a tree structure, which is similar to folders and files on a computer. 

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