AWS, JavaScript, React - Deploy Web Apps on the Cloud - Testing MariaDB Connection from PHP (Part 1)

This tutorial covers the basics of interacting with a database using PHP. It begins with an introduction to the importance of databases in web applications, followed by a step-by-step guide on setting up a Mariadb database and creating a non-root user. The tutorial then demonstrates how to connect to the database, create tables, and insert data using SQL commands. Finally, it verifies the data insertion by retrieving and displaying the data from the database.

Why is it important for PHP scripts to interact with databases in web applications?

• To enhance the visual design of the website

• To store and manage data efficiently

• To improve the speed of the website

• To reduce the cost of hosting

What is the first step in setting up a new MariaDB database?

• Creating a new non-root user

• Creating a new table

• Inserting sample data

• Connecting to the MariaDB server

Why is it recommended to create a non-root user for database access?

• To speed up database queries

• To enable remote access

• To allow multiple users to access the database

• To prevent unauthorized access to other databases

What command is used to log into MariaDB with a specific user?

• grant all privileges

• create database

• mysql -u username -p

• sudo mariadb

How can you verify that a user has access to a specific database?

• By checking the server logs

• By executing the 'show databases;' command

• By inserting data into the database

• By creating a new table

What is the purpose of the 'auto_increment' attribute in a table column?

• To allow duplicate values

• To automatically increase the value for each new record

• To restrict the column to numeric values only

• To set a default value

Which SQL command is used to insert data into a table?

• SELECT

• UPDATE

• INSERT

• DELETE

What is the primary key in a database table?

• A column that stores the largest values

• A column that uniquely identifies each row

• A column that allows duplicate values

• A column that is always empty

What does the SQL SELECT statement do?

• It retrieves data from a table

• It updates existing data in a table

• It deletes data from a table

• It creates a new table

How can you confirm that data has been successfully inserted into a table?

• By checking the database size

• By executing a 'SELECT' statement

• By using the 'INSERT' command again

• By creating a new user