CMPN425-Fall 2022: MySQL Basics Quiz

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Which function is used to send a query or command to a MySQL connection?

mysql_close()

mysqli_connect()

mysql_error()

mysql_query() (correct)

What should be done to close the connection before the script ends?

Use mysqli_connect() function

Use mysql_error() function

Use mysql_close() function (correct)

It will be closed automatically when the script ends

What setting ensures that the primary key field cannot be null?

AUTO_INCREMENT

mysql_select_db()

NOT NULL (correct)

mysql_error()

Which statement is used to select data from a database in SQL?

SELECT Signup and view all the answers

What is used to uniquely identify the rows in a table in MySQL?

Primary key field Signup and view all the answers

What is the main function of a database in a company context?

Storing information categorically Signup and view all the answers

What is a table in the context of a database?

A collection of related data entries stored in columns and rows Signup and view all the answers

What is the primary purpose of a query in MySQL?

Requesting specific information from a database Signup and view all the answers

What is the function of the mysql_connect() function in MySQL?

Creating a connection to the database Signup and view all the answers

What is the role of a record in a database table?

Containing specific data entries organized in rows Signup and view all the answers

What is the main function of the mysql_connect() function in MySQL?

It creates a connection to the MySQL database Signup and view all the answers

What is the primary purpose of a query in MySQL?

To retrieve specific information from the database Signup and view all the answers

What is the role of a record in a database table?

To store specific information related to a single entity Signup and view all the answers

Which statement is used to select data from a database in SQL?

SELECT Signup and view all the answers

What is used to uniquely identify the rows in a table in MySQL?

Primary key Signup and view all the answers

What should be done to close the connection before the script ends?

Use the mysql_close() function Signup and view all the answers

Which function is used to create a database in MySQL?

mysql_query() Signup and view all the answers

What is the purpose of the AUTO_INCREMENT setting in MySQL?

It increases the value of the field by 1 each time a new record is added. Signup and view all the answers

What must be done before creating a table in MySQL?

Connect to the MySQL server using mysql_connect() or mysqli_connect(). Signup and view all the answers

What happens if the primary key field in a table is set to null?

The database engine requires a value to locate the record. Signup and view all the answers

Which statement selects data from a database table in SQL?

SELECT column_name(s) FROM table_name Signup and view all the answers

What is the purpose of the 'die' part in a MySQL connection?

To execute if the connection fails and terminate the script with an indicated message. Signup and view all the answers

What is the main function of a primary key in a database table?

To uniquely identify the rows in a table. Signup and view all the answers

What is used to send a query or command to a MySQL connection?

$result = mysql_query($sql, $con) Signup and view all the answers

What setting ensures that the primary key field cannot be null in MySQL?

NOT NULL Signup and view all the answers

What must be done before selecting data from a database table in MySQL?

Select the database using mysql_select_db() function. Signup and view all the answers

CMPN425-Fall 2022: MySQL Basics Quiz

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Questions and Answers

Which function is used to send a query or command to a MySQL connection?

What should be done to close the connection before the script ends?

What setting ensures that the primary key field cannot be null?

Which statement is used to select data from a database in SQL?

What is used to uniquely identify the rows in a table in MySQL?

What is the main function of a database in a company context?

What is a table in the context of a database?

What is the primary purpose of a query in MySQL?

What is the function of the mysql_connect() function in MySQL?

What is the role of a record in a database table?

What is the main function of the mysql_connect() function in MySQL?

What is the primary purpose of a query in MySQL?

What is the role of a record in a database table?

Which statement is used to select data from a database in SQL?

What is used to uniquely identify the rows in a table in MySQL?

What should be done to close the connection before the script ends?

Which function is used to create a database in MySQL?

What is the purpose of the AUTO_INCREMENT setting in MySQL?

What must be done before creating a table in MySQL?

What happens if the primary key field in a table is set to null?

Which statement selects data from a database table in SQL?

What is the purpose of the 'die' part in a MySQL connection?

What is the main function of a primary key in a database table?

What is used to send a query or command to a MySQL connection?

What setting ensures that the primary key field cannot be null in MySQL?

What must be done before selecting data from a database table in MySQL?

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