What is the purpose of the PDO::query() method in PDO extension?
A). Establishing a connection to a database
B). Executing an SQL statement
C). Fetching data from the database
D). Closing the database connection
What is the primary advantage of using PDO over MySQLi for database access in PHP?
A). Portability across different databases
B). Better performance
C). Easier syntax
D). More features
Which of the following is NOT a step in connecting to a MySQL database using PDO extension?
A). Create a PDO object
B). Set database credentials
C). Execute an SQL query
D). Handle connection errors
Which of the following is NOT a valid database driver supported by PDO extension?
A). MySQL
B). PostgreSQL
C). MongoDB
D). SQLite
What does PDO stand for in the context of PHP database access?
A). PHP Database Objects
B). PHP Data Operations
C). PHP Data Objects
D). PHP Database Extensions
What is the purpose of the PDO::beginTransaction() method in PDO extension?
A). Initiating a database transaction
B). Executing an SQL query
C). Fetching data from the database
D). Closing the database connection
What is the purpose of the PDO::lastInsertId() method in PDO extension?
A). Retrieving the ID generated by the last INSERT statement
B). Executing an SQL query
C). Fetching data from the database
D). Closing the database connection
Which PHP function is used to establish a connection to a MySQL database server using MySQLi extension?
A). mysqli_connect()
B). mysqli_query()
C). mysqli_fetch_assoc()
D). mysqli_close()
Which PHP extension offers a consistent interface for accessing different database engines, including MySQL, PostgreSQL, and SQLite?
A). MySQL
B). PDO
C). SQLI
D). MySQLi
Which of the following statements is true regarding database connections in PHP applications?
A). Database connections should be properly closed after use
B). Database connections are automatically closed by PHP
C). Keeping database connections open improves performance
D). Multiple simultaneous database connections are recommended