JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Ordering Data / 260

JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Ordering Data / 260

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Hard

Created by

Quizizz Content

FREE Resource

The video tutorial explains the use of the ORDER BY clause in database queries to sort data in ascending or descending order. It covers the importance of creating a sequence using IDs or timestamps, and how to implement 'created at' and 'updated at' fields. The tutorial also discusses the need for indexing to optimize queries and provides a practical example of ordering movie records. Finally, it introduces the concept of updating records, which will be covered in the next session.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of the ORDER BY clause in a query?

To filter data based on conditions

To order data in ascending or descending order

To group data by a specific field

To join multiple tables

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why might auto-generated IDs not be reliable for ordering data?

They are dependent on user input

They are based on alphabetical order

They are random and not sequential

They are always in ascending order

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What fields are suggested to manage data effectively in a database?

Category and type

User ID and password

Created at and updated at

Name and description

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the 'created at' field typically populated?

Through a random generator

Automatically by the server

By copying from another field

Manually by the user

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the advantage of using server timestamps over local system time?

They are easier to read

They are more accurate

They are faster to retrieve

They are in a different format

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of creating an index on a field?

To make data entry easier

To speed up query performance

To increase storage space

To enhance data security

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if you try to query a non-indexed field in a database?

The query will automatically create an index

The query might be slower or cause an error

The query will return no results

The query will run faster

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