DDL and DML Commands Quiz: Learn SQL Fundamentals

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Questions and Answers

What is the primary function of DDL commands in SQL?

To delete a database

To query data from a database

To manipulate data in a database

To create the structure of a database (correct)

What is the name of the standard that SQL follows?

DBMS

ANSII (correct)

SQLL

SQLI

What is the purpose of the Data Manipulation Language (DML) in SQL?

To create the structure of a database

To query data from a database

To define the data types in a database

To manipulate data in a database (correct)

What is the term for the language used to create and define the structure of a database?

Data Definition Language Signup and view all the answers

What is the command used to create new entities in SQL?

CREATE Signup and view all the answers

What is the translation of the term Data Definition Language from English to Portuguese?

Linguagem de Definição de Dados Signup and view all the answers

What is the result of successful DDL commands?

Database objects Signup and view all the answers

What is phpMyAdmin used for?

Managing database objects Signup and view all the answers

What has led to faster web page loading times?

Programs executed by the browser Signup and view all the answers

What was the experience of internet users in the past?

Slow loading times with page reloads Signup and view all the answers

What is the primary purpose of DDL commands?

Creating new database objects Signup and view all the answers

What is the name of the tool used to access the phpMyAdmin?

XAMPP Signup and view all the answers

What was the original name of JavaScript?

LiveScript Signup and view all the answers

Why was JavaScript named after Java?

Because Java was a popular language Signup and view all the answers

What is Node.js?

A software that allows running JavaScript outside a web browser Signup and view all the answers

Which company developed the Netscape browser?

Netscape Signup and view all the answers

Why did Sun Microsystems support JavaScript?

To promote their own Java language Signup and view all the answers

What is a popular web browser that has various tools for learning JavaScript?

Google Chrome Signup and view all the answers

What is the operating system compatibility of the code editor mentioned?

Windows, macOS, and Linux Signup and view all the answers

What is the purpose of the 'var' instruction in JavaScript?

To declare a variable Signup and view all the answers

What is the characteristic of JavaScript's type system?

Dynamic typing Signup and view all the answers

What is the extension of the file created in the 'Hello World' example?

.html Signup and view all the answers

Where can you download the code editor mentioned?

<a href="https://code.visualstudio.com/">https://code.visualstudio.com/</a> Signup and view all the answers

What is the purpose of the YouTube link provided in the text?

To watch a tutorial on creating a 'Hello World' script Signup and view all the answers

What characters are accepted when creating an identifier?

Letters, underlines, cifrão, and numbers Signup and view all the answers

What is the main feature of Notepad++?

It's a freely available source code editor Signup and view all the answers

What is the primary function of XAMPP?

It's a local development server Signup and view all the answers

What operating systems does Visual Studio Code support?

Windows, macOS, and Linux Signup and view all the answers

What is the advantage of Visual Studio Code for developers?

It supports a wide range of programming languages Signup and view all the answers

What is the restriction when creating an identifier?

It must start with a letter Signup and view all the answers

Study Notes

JavaScript History

JavaScript was born out of the Netscape browser, during the browser war between Netscape and Microsoft (Internet Explorer).
Initially, JavaScript was named Mocha and LiveScript, but Sun Microsystems (then the developer of Java) partnered with Netscape to promote JavaScript, using the Java name for marketing purposes.

JavaScript Capabilities

JavaScript is implemented in all web browsers.
It can be used with Node.js, a software that allows executing JavaScript code outside of a web browser.

Tools and Downloads

Google Chrome is a recommended browser for learning, due to its various tools.
Node.js is a multi-platform, open-source software that allows executing JavaScript code outside of a web browser.
Notepad++ is a free, open-source code editor that supports multiple languages.
XAMPP is a free, local development tool that functions as a server on your computer.
Visual Studio Code is a popular, open-source code editor that supports multiple languages.

JavaScript Basics

JavaScript is a dynamically typed language, meaning you don't need to specify the data type when declaring a variable.
Variables can be declared using the 'var' keyword, followed by the identifier and optional initialization.
JavaScript supports various data types, including primitive types.

SQL and Database Management

SQL (Structured Query Language) is a programming language used to work with databases.
SQL commands are divided into two main groups: DDL (Data Definition Language) and DML (Data Manipulation Language).
DDL commands create the database structure, while DML commands manipulate the data within the database.