Which PHP extension is commonly used for executing SQL queries and interacting with databases?
A). MySQL
B). PDO
C). SQLI
D). PHPDB
What is the primary function of the mysqli_query() function in PHP?
A). Establishing a database connection
B). Executing SQL queries
C). Fetching data from the database
D). Closing the database connection
What is the primary purpose of the PDO::exec() method in PHP PDO extension?
A). Establishing a database connection
B). Executing an SQL query
C). Fetching data from the database
D). Closing the database connection
What is the purpose of the mysqli_close() function in PHP?
A). Establishing a database connection
B). Executing SQL queries
C). Fetching data from the database
D). Closing the database connection
Which of the following statements is true regarding SQL DELETE operation?
A). It removes all data from a table
B). It updates existing records in a table
C). It adds new records to a table
D). It removes specific records from a table
Which of the following SQL operations is used to insert new data into a database table?
A). INSERT
B). SELECT
C). UPDATE
D). DELETE
What is the primary purpose of the PDO::query() method in PHP PDO extension?
A). Establishing a database connection
B). Executing an SQL query
C). Fetching data from the database
D). Closing the database connection
What is the primary advantage of using PDO extension over MySQLi for executing SQL queries in PHP?
A). Better performance
B). Improved security against SQL injection
C). Easier syntax
D). Compatibility with older PHP versions
Which of the following PHP functions is used to execute an SQL query in PDO extension?
A). pdo_execute()
B). pdo_query()
C). pdo_fetch()
D). pdo_prepare()
Which of the following PHP functions is used to get the number of rows affected by an SQL query in MySQLi extension?
A). mysqli_num_rows()
B). mysqli_affected_rows()
C). mysqli_num_fields()
D). mysqli_fetch_row()